TY  - BOOK
AU  - Graf,William L.
TI  - The colorado River: instability and basin management 
SN  - 0-89291-186-7
AV  - GB566 .C7 G73
PY  - 1985///
CY  - State College, Pa.
PB  - Association of American Geographers
N1  - Incluye bibliografia
ER  -