Appraisal of oil and gas properties /
by Roswell H. Johnson ... and Paul Ruedemann.
Johnson, R. Hill., Ruedemann, P. (1923). Appraisal of oil and gas properties. [Pittsburgh?: s.n..
Johnson, Roswell Hill, 1877-, and Paul Ruedemann. Appraisal of Oil And Gas Properties. [Pittsburgh?: s.n., 1923.
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