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Walter H. Voskuil

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Stand Alone

Illinois Mineral Industry in 1949 (Classic Reprint)
Illinois Mineral Industry in 1948 (Classic Reprint)
Illinois Mineral Industry In 1943
Illinois Mineral Industry in 1943 (Classic Reprint)
The Market for Illinois Oil in 1937 and 1938 (Classic Reprint)
The Geography of Pennsylvania
Report of Investigations, Vol. 74 Part I. Illinois Mineral Industry in 1940; Part II. Historical Summary, 1919-1939 (Classic Reprint)
Illinois Mineral Industry In 1941 Report of Investigations, No. 87