Circulars. 500. Potash feldspar of possible economic value in barstow formation, San Bernadino County, Calif, [with list of references cited]; by Richard A. Sheppard and Arthur J. Gude, 3d.
Publication Title:
Potash feldspar of possible economic value in barstow formation, San Bernadino County, Calif, [with list of references cited]; by Richard A. Sheppard and Arthur J. Gude, 3d.
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Circulars. 500. Potash feldspar of possible economic value in barstow formation, San Bernadino County, Calif, [with list of references cited]; by Richard A. Sheppard and Arthur J. Gude, 3d.