TY  - BOOK
ED  - Geological survey
TI  - Map of slopes and their environmental significance in the Marana quadrangle, Arizona
T2  - Miscellaneous investigations series
PY  - 1973///
CY  - Washington
PB  - U. S. Geological survey
KW  - Géomorphologie
KW  - Carte géomorphologique
KW  - Versant
KW  - Etats Unis
KW  - Arizona
KW  - Marana
ER  -