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George R. Mansfield
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Journal Article
Published: 30 March 1929
GSA Bulletin (1929) 40 (1): 179–206.
Journal Article
Published: 30 March 1928
GSA Bulletin (1928) 39 (1): 271–280.
Journal Article
Published: 30 March 1927
GSA Bulletin (1927) 38 (1): 209–218.