The Nature and Logic of Capitalism by Robert L. Heilbroner (Paperback, 1986)

Elementary Forest Surveying and Mapping by Robert L. Wilson 1978

Elementary Statistics by Robert R. Johnson; Patricia J. Kuby

A Logic Book : Fundamentals of Reasoning by Robert M. Johnson (2006, Perfect,...

Set Theory and Logic by Robert Stoll - 9780486638294

THE LOGIC OF TYPED FEATURE STRUCTURES: WITH APPLICATIONS By Robert L. Carpenter

A Logic Book: Fundamentals of Reasoning by Johnson, Robert M.

Logic In Elementary Mathematics