01024cam a22003011  4500001001300000003000400013005001700017008004100034010001700075035001900092040005000111042001200161050001700173051003300190086002700223100003800250245004900288260006700337300001800404490008800422500001700510500005800527504002500585650001500610650002000625700006000645999001700705gs 18000313 DLC20260227111322.0770719s1918    azu           000 0 eng c  ags 18000313   a(OCoLC)3125801  aU. S. Geol. Survey. LibrarycTxEUdOCoLCdDLC  apremarc00aTN490.M3bA4  aTN24.A6bA35 no. 91cCopy 2.0 aMN 1.3:B 85/912azdocs1 aAllen, Milton Arthur,d1890-    .10aManganese,cby M. A. Allen and G. M. Butler.  aTucson, Ariz.,bUniversity of Arizona, Bureau of minesc[1918]  a32 p.c23 cm.0 aArizona. State bureau of mines. Bulletinvno. 91. Mineral technology series, no. 19  aCover title.  aAt head of title: ... University of Arizona bulletin.  a"References": p. 32. 0aManganese. 0aManganese ores.1 aButler, G. M.q(Gurdon Montague),d1881-ejoint author.  c25863d25863