00631cam a22001813a 450000100060000000300060000600500170001200800410002904000150007004200070008510000210009224501860011326000290029950600300032851600200035883000290037885600420040743232PGUSA20140828084001.0130716s2013||||xxu|||||s|||||000 | eng d  aPGUSAbeng  adc1 aRidgway, John L.14aThe Preparation of Illustrations for Reports of the United States Geological Survey :bWith Brief Descriptions of Processes of Reproductionh[electronic resource] /cJohn L. Ridgway  bProject Gutenberg,c2013  aPublic domain in the USA.  aElectronic text 0aProject Gutenbergv4323240uhttp://www.gutenberg.org/ebooks/43232