00920cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001900092040004800111042001200159050001800171082001100189100002400200245011200224260001900336300004600355490007900401504002500480650002700505650001300532650002800545810008100573gs 57000214 DLC20260227111405.0790329s1957    mtuab    b    000 0 eng c  ags 57000214   a(OCoLC)4798371  aU. S. Geol. Survey. Libr.cCoFSdOCoLCdDLC  apremarc00aTN490.T55bJ3  a553.491 aJarrard, Leonard D.10aSome occurrences of uranium and thorium in Montana.bWith sections on prospecting for radioactive minerals.  a[Butte]c1957.  aiv, 90 p.billus., maps (1 fold.)c19 cm.1 aMontana.  Bureau of Mines and Geology.  Miscellaneous contributionvno. 15  aBibliography: p. 90. 0aUranium oreszMontana. 0aThorium. 0aRadioactive substances.2 aMontana Bureau of Mines and Geology.tMiscellaneous contributions ;vno. 15.