Computer program for economic evaluations of underground bituminous coal mines

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086 0 ‡aI 28.27:8513
100 1 ‡aMiller, Robert A.
245 1 0 ‡aComputer program for economic evaluations of underground bituminous coal mines / ‡cby Robert A. Miller.
260 ‡a[Washington, D.C.] : ‡bU.S. Bureau of Mines, ‡c[1971]
300 ‡a42 p. : ‡btables ; ‡c26 cm.
490 0 ‡aInformation Circular / Bureau of Mines; ‡v8513
504 ‡aIncludes bibliographical references.
538 ‡aMode of access: Internet.
650 0 ‡aCoal mines and mining ‡xComputer programs.
650 0 ‡aBituminous coal.
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