00914cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040002700111042001200138050002200150051002700172100005600199245011000255260004300365300008200408490004300490500005000533500002600583650003400609999001700643gs 23000261 DLC20260227111327.0760204s1923    dcu          f000 0 eng    ags 23000261   a(OCoLC)1967462  aDLCcIDeKNdOCoLCdDLC  apremarc00aQE75b.B9 no. 748  aTN805.C6bC23cCopy 2.1 aCampbell, Marius R.q(Marius Robinson),d1858-1940.18a... The twentymile park district of the Yamps coal field, Routt county, Colorado,cby Marius R. Campbell.  aWashington,bGovt. Print. Off.,c1923.  aiv, 82 p. XIII pl.b(part. fold.; incl. map. diagrs.) tables, diagrs.c23 cm.0 aU.S.  Geological survey.  Bulletin 748  aAt head of title: Department of the Interior.  aMap folded in pocket. 0aCoalzColoradozRoutt County.  c26268d26268