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|Material Type:||Government publication, National government publication|
|All Authors / Contributors:||
Alfred H Brooks; Geological Survey (U.S.)
|Notes:||Part of illustrative matter in back pocket.
At head of title: Department of the Interior, United States Geological Survey.
|Description:||360 pages : illustrations, xv plates (including some folded maps) ; 24 cm.|
|Series Title:||Bulletin (Geological Survey (U.S.)), no. 520.|
|Responsibility:||by Alfred H. Brooks and others.|