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Environmental Issues
by
Philip M. Astwood, Carpenter
Kendall/Hunt Publishing Company, June 1, 1990
Paperback
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Environmental Issues
by
Carpenter, Philip M. Astwood
Kendall/Hunt Publishing Company, February 1, 1990
Paperback
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Environmental Issues
by
Philip M. Astwood, John Carpenter
Kendall/Hunt Publishing Company, January 1, 1999
Spiral-bound
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Understand.Earth 2e/Im
by
Philip M. Astwood
W.H. Freeman & Company, November 1997
Hardcover
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Instructor's resource manual for Press and Siever's Understanding earth, second edition
by
Philip M. Astwood
W.H. Freeman, 1998
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