Modern Science: 1896-1945 (History of Science)
by Ray Spangenburg, Diane Moser
ISBN 13: 9780816048540
Format: Hardcover (224 pages) Publisher: Facts On File Inc Published: 30 Jun 2004
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Carl Sagan: A Biography
by Ray Spangenburg,Kit Moser
ISBN 13: 9781591026587
Format: Illustrated (181 pages) Publisher: Prometheus Published: 01 Oct 2008