Wyoming Geological Association & Spalding, R. W. (1952). Guidebook: Seventh Annual Field Conference, Southern Big Horn Basin, Wyoming, 1952. The Association].
Citace podle Chicago (17th ed.)Wyoming Geological Association a Robert W. Spalding. Guidebook: Seventh Annual Field Conference, Southern Big Horn Basin, Wyoming, 1952. [S.l.: The Association], 1952.
Citace podle MLA (8th ed.)Wyoming Geological Association a Robert W. Spalding. Guidebook: Seventh Annual Field Conference, Southern Big Horn Basin, Wyoming, 1952. The Association], 1952.
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