TY  - BOOK
AU  - Plafker,George
TI  - Geologic Investigation of Proposet Power Sites at Cooper, Grant, Ptarmigan and Crescent Lakes Alaska
T2  - United States Depatments of the Interior. Geological survey bulletin ; 
PY  - 1955///
CY  - Washington, D.C : 
PB  - Government Printing Office, 
ER  -