The Story of the World - Volume 2: The Middle Ages (Revied)
Susan Wise Bauer
New Essays in Free Logic: In Honour of Karel Lambert
E. Morscher & A. Hieke
Creativity: The Psychology of Discovery and Invention
Mihaly Csikszentmihalyi
History and Philosophy of Modern Mathematics
William Aspray & Philip Kitcher
Dictionary of American History - Third Edition - Volume 3
Stanley I. Kutler
The Hopi
Nancy Bonvillain