Core drill map, Callahan-Shackelford prospect.

Bibliographic Details
Format:	Map
Language:	English
Published:	[Texas?] : [publisher not identified], [1970?]
Subjects:	Geology > Texas > Callahan County > Maps. Geology > Texas > Shackelford County > Maps. Drill cores > Texas > Callahan County > Maps. Drill cores > Texas > Shackelford County > Maps. Geological maps. Outline maps.

Evans: Maps (2nd floor) (Does not check out)