Hely, Allen G.  1908-1991 <br/><br/>
Some relations between streamflow characteristics and the environment in the Delaware river region / 
by A. G. Hely and F. H. Olmsted. 
 -- Washington :   United States Government Printing Office,   1963 
 - 25 p. + map. 
 (Geological Survey Professional Paper  ;  417-B).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Delaware<br/>Hidrología
<br/><br/><label>Universal Decimal Class. No.: </label>556(751)