Knowledge Trilogy

831 pages 1992

nonfiction art biography history reflective slow-paced

760 pages 1983

nonfiction history science informative slow-paced

745 pages hardcover 1983

nonfiction history science informative slow-paced

368 pages hardcover 1998

nonfiction history philosophy religion challenging informative slow-paced

320 pages 1998

nonfiction history philosophy religion challenging informative reflective slow-paced