Comets and the Origin and Evolution of Life (Advances in Astrobiology and Biogeophysics)
by
ISBN 13: 9783540330868
Format: Hardcover (364 pages) Publisher: Springer Published: 03 Aug 2006
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ISBN 13: 9783642069635
Format: Paperback (346 pages) Publisher: Springer Published: 25 Nov 2010 Other Format: Hardcover
U.S. Nuclear Weapons Policy: Confronting Today's Threats
by George Bunn,Christopher F. Chyba,William J. Perry
ISBN 13: 9780815713654
Format: Paperback (360 pages) Publisher: Brookings Institution Press Published: 30 Aug 2006