TY  - BOOK
AU  - Dunbier, Roger
TI  - The sonoran desert its geography, economy and people
U1  - 631.0915 D8 
PY  - 1968///
CY  - Tucson, Arizona
PB  - The University of Arizona Press
KW  - Población
KW  - Sonora
KW  - Regiones áridas
KW  - Condiciones
ER  -