01001cam a22002891  4500001001300000003000400013005001700017008004100034010001700075035001900092040002600111042001200137050001800149086002700167100003300194245004700227260006700274300001800341490008200359500001700441500005700458504003900515650001200554700006000566810006800626999001700694gs 19000411 DLC20260227111324.0800403s1919    azua     b   s000 0 eng    ags 19000411   a(OCoLC)6161753  aDLCcTxCMdOCoLCdDLC  apremarc00aTN948.B18bA40 aMN 1.3:B 85/992azdocs1 aAllen, Milton Arthur,d1890-10aBarytes,cby M. A. Allen and G. M. Butler.  aTucson, Ariz.,bUniversity of Arizona, Bureau of Minesc[1919]  a18 p.billus.1 aArizona. Bureau of Mines. Bulletinvno. 99. Mineral technology series, no. 22  aCover title.  aAt head of title: University of Arizona bulletin ...  a"Selected bibliography": p. 17-18. 0aBarite.1 aButler, G. M.q(Gurdon Montague),d1881-ejoint author.2 aUniversity of Arizona.bState Bureau of Mines.tBulletin ;v99.  c25962d25962