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Arthur David Howard
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Journal Article
Zoning in spherulites
Publisher: Mineralogical Society of America
Published: 01 September 1940
American Mineralogist (1940) 25 (9): 614–618.
Journal Article
Cristobalite in southwestern Yellowstone Park
Publisher: Mineralogical Society of America
Published: 01 August 1939
American Mineralogist (1939) 24 (8): 485–491.