Showing 1 - 6 of 6 for search: 'Troyer, M. L. 1916-', query time: 0.04s
by Troyer, M. L. 1916-
Published: U.S. Geological Survey, 1964
Description: 1 map : color ; 111 x 96 cm.
Map
by Troyer, M. L. 1916-
Published: University of Wyoming, 1969
Description: 73 pages ; 24 cm.
Book
by Troyer, M. L. 1916-
Published: [publisher not identified], 1954
Description: 17 pages : illustrations, maps (2 folded in pocket) ; 27 cm.
Book
by Troyer, M. L. 1916-
Published: The Survey, 1955
Description: 1 map : color ; on sheet 100 x 131 cm, folded in envelope 30 x 24 cm.
Map
by Keefer, William R., 1924-
Description: 1 online resource (v, 123 pages) : illustrations, maps (1 color).
eBook
by Keefer, William R., 1924-
Published: The Survey, 1956
Description: 1 chart ; 98 x 136 cm, folded in envelope 30 x 24 cm.
Map

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