Vagueness and Degrees of Truth
Nicholas J. J. Smith
Codes, Ciphers and Secret Writing
Martin Gardner
Dover Children's Activity Books (1)
American Book Publishing Record Cumulative, 1876-1949 - Non-Dewey ...
George Henry Borrow
Mind: A Brief Introduction
John Rogers Searle
The Yang-Mills Equations Over Riemann Surfaces
Michael Francis Atiyah
White Mars - Or, The Mind Set Free A 21st-Century Utopia
Brian Aldiss & Roger Penrose