Ridgway, John L.  1859- <br/><br/>
The preparation of illustrations for reports of the United States Geological survey,  with brief descriptions of processes of reproduction. 

 - Washington,  Govt. print. off.,  1920. 
 - 101 p. 
<br/><br/><label>LCCN: </label>gs 20000419  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Illustration of books.
<br/><br/><label>LC Class. No.: </label>QE75  / .I5