00643cam a22001931  4500001001300000003000400013005001700017008004100034010001700075035001800092040002700110050001400137100004400151245014400195260004300339300001100382650002700393710002900420gs 20000419 DLC20260227111325.0730124s1920    xx            000 0 eng    ags 20000419   a(OCoLC)545232  aDLCcODaWUdOCoLCdDLC00aQE75b.I51 aRidgway, John L.q(John Livesy),d1859-14aThe preparation of illustrations for reports of the United States Geological survey,bwith brief descriptions of processes of reproduction.  aWashington,bGovt. print. off.,c1920.  a101 p. 0aIllustration of books.2 aGeological Survey (U.S.)