00875cam a22002651i 4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111043001200132050002100144051001700165100005800182245006700240260004300307300004800350490004500398500002700443650003800470650002800508810005600536999001700592gs 05000660 DLC20260227111301.0790521s1891    dcuab        f000 0 eng    ags 05000660   a(OCoLC)4986479  aDLCcICharEdDLC  an-us---00aQE75b.B9 no. 81  aQE656b.W1451 aWalcott, Charles D.q(Charles Doolittle),d1850-1927.10aCorrelation papers ; Cambrian /cby Charles Doolittle Walcott.  aWashington,bGovt. Print. Off.,c1891.  a447 p. :biii fold. maps, diagrs. ;c24 cm.1 aU.S. Geological survey. Bulletinvno. 81  aLiterature : p. 19-48. 0aGeology, StratigraphicyCambrian. 0aGeologyzUnited States.1 aUnited States.bGeological Survey.tBulletin ;v81.  c24261d24261