Plows, plagues, and petroleum :

By Ruddiman, W. F.. . xiv, 226 pages : , Originally published in 2005 24 cm. 9780691146348 | 0691146349

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Plows, plagues, and petroleum :

By Ruddiman, W. F.. Princeton, N.J. ; | Woodstock : Princeton University Press, 2007 . xiv, 202 p. : , Originally published: 2005 24 cm. 9780691133980 (pbk.) | 0691133980 (pbk.)

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Plows, plagues, and petroleum :

Plows, plagues, and petroleum :