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  1. 1
    by Hughes, Richard V.
    Published 1967
    Book

    Oil property valuation.
  2. 2
    by Uren, Lester Charles
    Published 1946
    Book

    Petroleum production engineering oil field development TN870 U73.
  3. 3
    by Leith, Charles Kenneth 1875-
    Published 1943
    Book

    World minerals and world peace
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