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Preliminary general geologic map of the Laredo quadrangle, Bearpaw Mountains, Montana
Laredo quadrangle, Bearpaw Mountains, Montana
1 map : color ; 88 x 58 cm., on sheet 102 x 92 cm., folded to 28 x 19 cm., in envelope 30 x 24 cm.
by W.T. Pecora, I.J. Witkind, and D.B. Stewart.
Planimetric and geologic features transferred by sketchmaster from aerial photographs (1941 flight) ... planimetric and geologic map ... based on field investigations in 1949-51."."
Includes text, explanation, index map, and bibliographical references.
Miscellaneous geologic investigations ; map I-234