00877cam a22002411  4500001001300000003000400013005001700017008004100034010001700075035001900092040004600111042001200157050001700169110003800186245006100224260004700285300004600332500001400378504015500392650002700547700004400574999001700618gs 09000263 DLC20260227111309.0790216s1909    xxc           000 0 eng c  ags 09000263   a(OCoLC)4660287  aU.S. Geol. Survey. Libr.cOCldOCoLCdDLC  apremarc00aTN490.T9bC21 aCanada.bMines Branch (1901-1936)00aReport on the tungsten ores of Canada,cby T. L. Walker.  aOttawa,bPrinted by C. H. Parmelee,c1909.  aiv, 56 p.billus., 5 pl., 5 maps.c25 cm.  a"No. 25."  a"Bibliography of Canadian tungsten literature": p. 48-50. "Brief list of important literature on American tungsten occurrences--United States": p. 50. 0aTungsten oreszCanada.1 aWalker, T. L.q(Thomas Leonard),d1867-  c24846d24846