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Erosion /
by Riley, Joelle.
Publication:
Minneapolis, MN : Lerner Publications Co., 2007
. 48 p. :
23 cm.
Date:2007
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(1),
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Human footprint : everything you will eat, use, wear, buy, and throw out in your lifetime /
by Kirk, Ellen,
Publication:
Washington, D.C. : National Geographic, 2010
. 32 p. :
, "The book is based on the Preserve our Planet National Geographic Channel presentation, Human footprint"--P. 32.
28 cm.
Date:2010
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(1),
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