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Black Gap Area, Brewster County, Texas OP. Digital Download
GQ0030D
A free, digital version of this publication can be found on: Texas ScholarWorks
To purchase a print version (if available): GQ0030
GQ0030D. Geology of Black Gap Area, Brewster County, Texas, by B. E. St. John. Oversize color geologic map, scale 1:62,500, with 18-p. text, 1966.
