Online Libraries and Bookshops/ Llibreries i Biblioteques Virtuals

http://www.bookshop.co.uk/hme/hmepge.asp
http://www.booksonline.co.uk/
http://www.cambridge.org/
http://www.cambridge.org/elt/readers
http://www.booksunlimited.co.uk/
http://books.guardian.co.uk/
http://www.amazon.de/
http://www.libri.de/
http://www.google.com
http://www.bl.uk/
http://www.loc.gov/
http://wwws.elibrary.com/