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