TY  - BOOK
AU  - Ridgway,John L.
TI  - The Preparation of Illustrations for Reports of the United States Geological Survey: With Brief Descriptions of Processes of Reproduction
PY  - 2013///
PB  - Project Gutenberg
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/43232
ER  -