Dig in! hands-on soil investigations.

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Bibliographic Details
Corporate Authors:	National Science Teachers Association, ebrary, Inc
Format:	Electronic eBook
Language:	English
Published:	Arlington, Va. : NSTA Press, c2001.
Subjects:	Soil science > Study and teaching > Activity programs. Soils > Study and teaching > Activity programs. Electronic books.
Online Access:	An electronic book accessible through the World Wide Web; click to view
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