Olmsted, F. H. <br/><br/>
Relation between ground water and surface water in Brandywine creek basin Pennsylvania / 
by F. H. Olmsted and A. G. Hely. 
 -- Washington :   United States Government Printing Office,   1962 
 - 21 p. -- 
 (Geological Survey Professional Paper  ;  417-A).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hidrología<br/>Pennsylvania
<br/><br/><label>Universal Decimal Class. No.: </label>556(748)