Online Books by
A. S. Walker
(Walker, A. S. (Alta Sharon), 1942-)
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Additional books from the extended shelves:
Walker, A. S. (Alta Sharon), 1942-: Annotated bibliography of remote sensing methods for monitoring desertification / (Alexandria, VA : U.S. Geological Survey, 1981), also by Charles Joseph Robinove (page images at HathiTrust)
Walker, A. S. (Alta Sharon), 1942-: Deserts: Geology and Resources (Gutenberg ebook)
Walker, A. S. (Alta Sharon), 1942-: Deserts : geology and resources / (Denver, CO (P.O. Box 25286, Denver 80225) : U.S. Dept. of the Interior, U.S. Geological Survey, [2000]), also by Geological Survey (U.S.) (page images at HathiTrust)
Walker, A. S. (Alta Sharon), 1942-: Deserts : geology and resources / (Denver, CO (P.O. Box 25286, Denver 80225) : U.S. Dept. of the Interior, U.S. Geological Survey, [1996]), also by Geological Survey (U.S.) (page images at HathiTrust)
See also what's at your library, or elsewhere.
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