Situations, Language and Logic by Jens Fenstad / Paperback / ISBN 1556080492

Applying Logic in Chess by Erik Kislik (2018, Trade Paperback)

Angry at Breakfast: Ten Years of Editorials from The Saturday Paper by Erik Jens

Logic in Linguistics (Cambridge Textbooks in Lingu... by Allwood, Jens Paperback

Perl and XML by Erik T. Ray (Paperback, 2002)

Applying Logic in Chess by Erik Kislik (2018, Trade Paperback)

Logic in Linguistics (Cambridge Textboo... by Allwood, Jens Paperback / softback

Barbarians in the Greek and Roman World, Erik Jens