Não informado. (1966). Abstracts of North American geology. U.S. Geological Survey.
Chicago Style (17th ed.) CitationNão informado. Abstracts of North American Geology. Washington: U.S. Geological Survey, 1966.
MLA (8th ed.) CitationNão informado. Abstracts of North American Geology. U.S. Geological Survey, 1966.
Warning: These citations may not always be 100% accurate.