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1
Dirt the erosion of civilizations /
Published 2007An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
2
Footprints in the soil people and ideas in soil history /
Published 2006An electronic book accessible through the World Wide Web; click to view
Electronic Conference Proceeding eBook -
3
Dig in! hands-on soil investigations.
Published 2001An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
4
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5
Dirt the erosion of civilizations /
Published 2012An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
6
Soil genesis and classification
Published 2011An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
7
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8
Dirt the erosion of civilizations /
Published 2012An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
9
Soil genesis and classification
Published 2011An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
10
-
11
Dirt the erosion of civilizations /
Published 2007An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
12
Footprints in the soil people and ideas in soil history /
Published 2006An electronic book accessible through the World Wide Web; click to view
Electronic Conference Proceeding eBook -
13
Dig in! hands-on soil investigations.
Published 2001An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
14