01145cam a22003011  4500001001300000003000400013005001700017008004100034010001700075035001900092040002400111042001200135050002200147082001100169086001600180100002800196245023200224260004800456300004500504410005600549500005000605504003000655650002200685650002000707650002700727700004500754700004400799gs 67000169 DLC20260227111420.0780627s1967    dcuab    b   f000 0 eng    ags 67000169   a(OCoLC)4011760  aDLCcOClUdISSdDLC  apremarc00aQE75b.P9 no. 561  a552/.50 aI 19.16:5611 aHill, Thelma P.,d1917-10aChemical composition of sedimentary rocks in Colorado, Kansas, Montana, Nebraska, North Dakota, South Dakota, and Wyoming.cCompiled by Thelma P. Hill, Marian A. Werner, and M. Julia Horton. With an introd. by William W. Rubey.  aWashington,bU.S. Govt. Print. Off.,c1967.  av, 241 p.billus., maps (1 col.)c29 cm.20aGeological Survey (U.S.).tProfessional paper,v561  aPart of illustrative matter folded in pocket.  aBibliography: p. 225-231. 0aSedimentary rocks 0aRocksxAnalysis 0aPetrologyzWest (U.S.)1 aWerner, Marian A.,d1935-ejoint author.1 aHorton, M. Julia,d1936-ejoint author.