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Barrons Educational Series
> Alan D. Sills
Alan D. Sills
title
ISBN-13
(ISBN-10)
year of publication
Earth Science the Easy Way
978-0-7641-2146-3
(0-7641-2146-4)
2003
E-Z Earth Science
978-0-7641-4464-6
(0-7641-4464-2)
2009
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A. Sills
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Alan S.
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Alan Sills
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Alan D. Smaill