ОСТАНАТИ ДИГИТАЛНИ БИБЛИОТЕКИ
http://www.theeuropeanlibrary.org/tel4/
http://www.ukoln.ac.uk/services/elib/
http://www.oclc.org/en-europe/home.html
https://www.pinterest.com/europeana/
http://solo.bodleian.ox.ac.uk/primo_library/libweb
http://www.lib.berkeley.edu/node
http://www.library.illinois.edu/
http://www.bnf.fr/fr/acc/x.accueil.html
http://www.londonlibrary.co.uk/
https://onesearch.library.utoronto.ca/