Bibliography--Answer to Query
4 records found for
author name Ruhl, Otto.
Title: Zinc-lead ore reserves of the Tri-state district, Missouri-Kansas-Oklahoma
Author: Ruhl, Otto; Allen, S.A.; and Holt, S.P.
Publication: U.S. Bureau of Mines, Report of Investigations, no. 4490, 59 pages
Year: 1949
Title: Tri-state zinc-lead ore reserves
Author: Ruhl, Otto
Publication: U.S. Bureau of Mines, Report of Investigations, no. 3922, 7 pages
Year: 1946
Title: Investigation of the zinc-lead deposits in horizons below the Grand Falls chert, Galena district Cherokee County, Kansas
Author: Ruhl, Otto; and Ballinger, H.J.
Publication: U.S. Bureau of Mines, Report of Investigations, no. 4398, 119 pages
Year: 1949
Title: Unconformity and deposits
Author: Ruhl, Otto
Publication: Mining and Scientific Press, vol. 96, pp. 778-780
Year: 1908
Kansas Geological Survey
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