Conceptual Graphs for Knowledge Representation: ... International ...
Guy W. Mineau & Bernard Moulin & John F. Sowa
Natural Language Processing in Action
Hobson Lane & Cole Howard & Hannes Hapke
Ethics ; The Study of Moral Values
Mortimer Jerome Adler
The Communist Manifesto
Karl Marx & Friedrich Engels
The Joyous Cosmology
Alan W. Watts
Okinawa: The Last Battle of World War II
Robert Leckie