Denny, Charles Storrow  1911- <br/><br/>
Surficial geology and soils of the Elmira-Williamsport region, New York and Pennsylvania / 
by Charles S. Denny and Walter H. Lyford. 
 -- Washington :   United States Government Printing Office,   1963 
 - 60 p. + map. -- 
 (Geological Survey Professional Paper  ; 379).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología<br/>New York<br/>Pennsylvania
<br/><br/><label>Universal Decimal Class. No.: </label>55(747/748)