The Place of the Sciences of Man in the System of Sciences
Jean Piaget
John Searle
Barry Smith
A History Of The Crusades 3 Volume Set
Steven Runciman
The New Penguin Dictionary of Biology
Michael Abercrombie & M. L. Johnson & Michael Thain
The First Crusade 1096-99: Conquest of the Holy Land
David Nicolle & Christa Hook
Laws of Form
G. Spencer-Brown