00806cam a22002291  4500001001300000003000400013005001700017008004100034010001700075035001900092040005000111042001200161050002300173100003800196245006500234260004400299300006000343490007000403502006600473650002000539999001700559gs 21000302 DLC20260227111325.0761027s1921    xx            000 0 eng c  ags 21000302   a(OCoLC)2532705  aU.S. Geol. survey. LibrarycOGraDdOCoLCdDLC  apremarc00aQE185b.A2 no. 1231 aCockfield, William Egbert,d1890-10aSixtymile and Ladue rivers area, Yukon,cby W. E. Cockfield.  aOttawa,bThomas Mulvey, printer,c1921.  a3 p. l., 60 p.bVI pl., fold. col. map, tables.c25 cm.0 aCanada. Geological Survey. Memoir 123. no. 105, Geological series  aPublished also as thesis (Ph. D.) Princeton University, 1918. 0aGeologyzYukon.  c26109d26109