Links to electronic libraries:

https://bit.ly/2UZU54h
https://bit.ly/2YWuz1B
https://bit.ly/3BMDQrS
https://bit.ly/3dAf3x3
https://bit.ly/3h7qIWi
https://bit.ly/3n3d20j
http://ecsocman.hse.ru/net/16000672/index.html
https://library.uns.ac.id/free-e-book/
https://vk.com/topic-31022965_29273692
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Library Genesis Group Sites:

http://libgen.gs/
http://libgen.is/
http://libgen.li/
http://libgen.lc/
http://libgen.rs/
http://libgen.st/
https://libgen.fun/
https://libgen.pw/
https://ooopn.com/tool/libgen/

Z-Library on TOR-network:
http://zlibrary24tuxziyiyfr7zd46ytefdqbqd2axkmxm4o5374ptpc52fad.onion/
http://bookszlibb74ugqojhzhg2a63w5i2atv5bqarulgczawnbmsb6s6qead.onion/
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Sci-Hub - mirrors:

https://sci-hub.41610.org/
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ftp://nozdr.ru/biblio/
http://2baksa.ws/section/7/
http://akapo.narod.ru/
http://all-ebooks.com/
http://amac.md/pageview.php?l=ru&idc=36&id=213
http://aperock.ucoz.ru/load/
http://babylonians.narod.ru/index.html
http://bards.ru/archives/index.php
http://biblioclub.ru/index.php?page=book_blocks&view=main_ub
http://bkload.com/
http://book2.me/
http://bookrags.com/browse/ebook/A/?page=1#gsc.tab=0
http://bookrest.in/
http://books.totalarch.com/
http://bookwa.org/
http://bwbooks.net/index.php?id1=1
http://chem.msu.ru/rus/library/welcome.html
http://cwer.ws/category/1007/
http://ebook3000.com/
http://ebooksz.net/
http://ec-dejavu.ru/library.html
http://elbooka.info/
http://elib.osu.ru/
http://enc.biblioclub.ru/
http://epmg.kz/ru/dictionaries/glossary_gen.html
http://e-reading.club/
http://etextlib.ru/
http://eup.ru/Catalog/All-All.asp
http://farposst.ru/index.php
http://feb-web.ru/
http://feedbooks.com/publicdomain
http://freebookspot.es/
http://free-ebooks.ru/
http://freetechbooks.com/
http://i-doc.club/
http://in-yaz-book.ru/slovari.html
http://klassikaknigi.info/
http://knigka.info/
http://knigka.su/
http://koob.ru/category/
http://kulichki.com/inkwell/
http://lbooks.ru/
http://lib.21h.io/library/
http://lib.ru/
http://libok.net/
http://lin.irk.ru/
http://loveread.ec/
http://magazineagain.com/
http://magzdb.org/
http://many-books.org/
http://maxima-library.org/
http://mexalib.com/
http://militera.lib.ru/
http://mirbukv.com/
http://myboerse.bz/forumdisplay.php?27-Dokumentenboerse
http://nozdr.ru/biblio
http://only-books.ru/
http://openculture.com/
http://padabum.com/
http://padaread.com/
http://pdfgeni.com/
http://pdfkurs.com/
http://physicsbooks.narod.ru/Dictionares.html
http://pinkmonkey.com/
http://publ.lib.ru/publib.html
http://razgovornik.net/
http://rulit.me/
http://samlib.ru/cgi-bin/seek
http://sfcatalog.narod.ru/
http://sinludmila.ucoz.ru/
http://skygu.ru/content/category/1/1/177/
http://slovo.yaxy.ru/add_dld.html
http://takebooks.com/
http://techliter.ru/
http://test.cwer.ws/category/1007/
http://touching.ru/books/
http://tululu.org/
http://turklib.ru/
http://venec.ulstu.ru/lib/
http://window.edu.ru/catalog/resources
http://xliby.ru/
http://zipsites.ru/
https://6lib.ru/
https://a.kniga.me/
https://academia.edu/
https://adoc.pub/
https://aldebaran.ru/
https://all.alleng.org/index.htm
https://annas-archive.org/
https://archive.org/
https://avidreaders.ru/
https://azpdf.tips/
https://baixardoc.com/
https://bib.convdocs.org/
https://biblio-sciences.org/
https://big-dl.com/
https://bookboon.com/
https://bookfor.ru/
https://bookrix.com/
https://books2you.ru/
https://booksbg.org/
https://bookscafe.net/
https://booksforall.org.uk/Home/
https://bookshake.net/
https://bookskeeper.ru/
https://bookspics.com/
https://booksprime.ru/
https://bookyards.com/en/welcome
https://bookz.ru/
https://bookzip.ru/
https://chinesepdfbooks.com/
https://chitalkino.ru/
https://chitalnya.ru/
https://chomikuj.pl/
https://clado.net/
https://cloda.org/
https://coollib.net/
https://datenpdf.com/
https://diakov.net/biblioteka/knigi/
https://dic.1963.ru/
https://disc.allsave.info/index.htm
https://disk.yandex.ru/d/o5S5D2mY-l1I9w
https://djvu.online/
https://dl.ndl.go.jp/?__lang=en
https://docdownloader.com/
https://docer.pl/
https://dochero.tips/
https://dochot.net/
https://docjax.com/
https://docplayer.es/
https://docplayer.fr/
https://docplayer.ru/
https://documenti.site/
https://documents.pub/
https://docuri.com/
https://doczz.com.br/
https://doczz.es/
https://dokumen.pub/
https://dokumen.site/
https://dokumen.tips/
https://dwg.ru/lib
https://ebook3000.co/
https://ebookbb.com/
https://ebooks-for-all.com/
https://ebook-hell.to/?p=news
https://ebook-hunter.org/
https://ebookpdf.com/
https://ebooks.com/en-bg/
https://ebooks777.net/
https://ebooksbag.com/
https://ebooksz.net/
https://ekniga.com.ua/
https://ekniga.org/
https://e.lanbook.com/
https://elib.cc/
https://elib.vvsu.ru/
https://e-libra.ru/
https://elibrary.ru/defaultx.asp
https://elit-knigi.ru/
https://engbookspdf.com/
https://englishlib.org/
https://epage.pub/
https://epdf.pub/en/
https://epdf.tips/
https://e-reading.by/
https://eruditor.io/
https://etymologiebank.nl/werken
https://ezocat.ru/
https://fadedpage.com/
https://fb2-epub.com/
https://fb2lib.ru/
https://fdokumen.com/
https://fdocumente.com/
https://fdocuments.in/
https://fdocuments.mx/
https://flibusta.is/
https://flisland.net/
https://freecomputerbooks.com/
https://freedocs.xyz/
https://free-ebooks.net/
https://freetechbooks.com/
https://frs.noosphere.ru/xmlui/
https://fullegal.com/en/search-pieces
https://geokniga.org/
https://german.learn-langauges.com/
https://get-books.ru/
https://getfreeebooks.com/
https://getlib.ru/
https://glossarissimo.wordpress.com/
https://hathitrust.org/
https://hobbydocbox.com/
https://holybooks.com/
https://hugepdf.com/
https://idoc.pub/
https://iknigi.net/
https://issuu.com/
https://itexts.net/
https://kipdf.com/
https://klex.ru/
https://kniga-free.ru/
https://knigifb2.org/
https://knigifb2.ru/
https://knigi-fb2.net/
https://knigoguru.net/
https://knigomania.org/
https://knowfree.tradepub.com/
https://kodges.ru/
https://ksana-k.ru/
https://kupdf.net/
https://leanpub.com/
https://lib-fond.ru/
https://lib-fond.ru/lib-rgb/
https://libcat.ru/
https://libfox.ru/
https://library.sammi.uz/
https://librate.ru/pdf
https://libren.org/index.htm
https://librivox.org/
https://librusec.pro/b/list/?detailed=1
https://literature.org/authors/
https://litgu.ru/
https://litlife.club/
https://litmore.ru/
https://litresp.ru/
https://livelib.ru/
https://loc.gov/
https://manybooks.net/
https://massolit.site/
https://may.alleng.org/edu/inform.htm
https://mebooksfree.net/category/free-books
https://megasliv.biz/
https://mirknig.su/
https://mirknig.ws/
https://mirlib.ru/
https://mognb.ru/
https://moreknig.org/
https://mygully.com/forum/363-dokumente/
https://mymirknig.ru/
https://nanopdf.com/
https://nashaucheba.ru/
https://nashol.com/
https://nehudlit.ru/
https://nemaloknig.net/
https://nnmclub.ro/forum/portal.php?c=5
https://noor-book.com/
https://novosti-kosmonavtiki.ru/books/
https://obuchalka.org/
https://oceanofpdf.com/
https://ocw.mit.edu/courses/online-textbooks/
https://oiipdf.com/
https://online-biblio.tk/
https://onlinebooks.library.upenn.edu/
https://onlybooks.org/
https://openculture.com/free_ebooks
https://pdf-book.ru/
https://pdfcookie.com/
https://pdffox.com/
https://pdfget.com/
https://pdfroom.com/
https://pdfsearches.com/
https://pdfslide.net/
https://philka.ru/news.php?list.6
https://pimpmymind.net/
https://publicbookshelf.com/
https://publicdomainreview.org/
https://qdoc.tips/
https://rbook.me/
https://rcin.org.pl/
https://readli.net/
https://realtimepublishers.com/
https://releasehive.com/ebooks/
https://rep.bntu.by/
https://ridero.ru/books/catalog/free/
https://royallib.com/
https://rusichi.info/books
https://ruslit.traumlibrary.net/
https://sanet.st/books/
https://sciarium.com/
https://sciencedirect.com/
https://shamardanov.ru/
https://sheba.spb.ru/
https://silo.tips/
https://slovar.com.ua/
https://slovari.ru/default.aspx?s=0&p=221
https://sovietime.ru/
https://studfile.net/
https://studmed.ru/files/
https://studocu.com/
https://studylib.es/
https://studylib.net/
https://studylibde.com/
https://studylibfr.com/
https://taschenhirn.de/
https://textarchive.ru/
https://the-eye.eu/public/
https://thelib.info/
https://thelib.ru/
https://topliba.com/
https://trantor.is/
https://tuxdoc.com/
https://twirpx.club/
https://twirpx.com/
https://twirpx.org/
https://ulozto.net/
https://uniturm.de/
https://ussrvopros.ru/
https://vbooks.ru/
https://vdoc.pub/
https://vdocuments.es/
https://vdocuments.mx/
https://vdocuments.net/
https://vdocuments.site/
https://vdocuments.us/
https://vknige.net/
https://vorleser.net/
https://wawacity.blue/?p=ebooks
https://xn--80ad7bbk5c.xn--p1ai/ru/library
https://xn--c1ajahiit.ws/
https://zdocs.pub/
https://zoboko.com/