C. H. Maxwell and M. H. Hibpshman
C. H. Maxwell and L. G. Nonini
Walter C. Mendenhall and Frank C. Schrader
E. O. Ulrich and W. S. Tangier Smith
K. L. Tanaka, T. C. Onstott, and E. M. Shoemaker
John W. Ewert and Donald A. Swanson
John Sinkankas and Arch M. Reid
W. F. Cannon and M. G. Mudrey, Jr.
W. F. Cannon and M. G. Mudrey, Jr.
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