Showing 1 - 3 of 3 for search: 'Fretwell, M. O.,', query time: 0.06s
by Fretwell, M. O.,
Published: U.S. Geological Survey, 1984
Description: 1 online resource (viii, 96 pages) : illustrations, maps.
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by Bortleson, Gilbert Carl, 1940-
Published: U.S. Geological Survey ; Earth Science Information Center, Open-File Reports Section [distributor], 1993
Description: vii, 24 pages : illustrations, maps (1 color) ; 28 cm.
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by Bortleson, Gilbert Carl, 1940-
Published: U.S. Geological Survey, 1993
Description: 1 online resource (vii, 24 pages) : illustrations, maps (1 color).
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