Pickels, George Wellington,  1883- <br/><br/>
Engineering and legal aspects of land drainage in Illinois, 
by G. W. Pickels and F. B. Leonard, Jr. 
 - Urbana, Ill.,  Printed by authority of the State of Illinois,  1921. 
 - 322 p.  illus. 
<br/><br/> At head of title: State of Illinois. Department of registration and education. Division of the State Geological Survey. Frank W. De Wolf, chief.  Map folded in pocket. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>gs 22000150  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply--Illinois.<br/>Drainage--Illinois.
<br/><br/><label>LC Class. No.: </label>QE105  / .A16 no. 42