Where Land, Air, and Water Meet Change and Cycles |
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"Logs of Straws" - Dendrochronolgy Time and Cycles |
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Earth as Home |
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This teacher packet was originally published and printed in 1993. The online edition contains full text from the original publication. Some images have been modified or added to improve the scientific visualization of information. This document has undergone official review and approval for publications established by the National Mapping Division, U.S. Geological Survey.
Geography | Water | Biology | Geology | U.S. Geological Survey | Dept. of Interior |
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