till 31st of October the Consortium of Swiss University Libraries offers a free trial phase to Oxford University Press's online portal 'Oxford Scholarship Online' (http://www.oxfordscholarship.com) that contains full text of over 750 books .

Among other books you will find a bunch of books on the topic "philosophy and knowledge". Just search for "knowledge", by authors, or the in the subject "philosophy".

www.oxfordscholarship.com
Username = gksh1
Password = scholarship