TY  - BOOK
AU  - Axelrod,Daniel I.
TI  - Age and origin of Sonoran Desert vegetation
T2  - Occasional papers of the California Academy of Sciences
SN  - 0068-5461
U1  - 581.972 
PY  - 1979///
CY  - San Francisco
PB  - California Academy of Sciences
KW  - Paleobotany
KW  - Cretaceous
KW  - Tertiary
KW  - Sonoran Desert (Mexico and U.S.)
KW  - Desert plants
KW  - Plants
KW  - Evolution
N1  - Cover title; Bibliography: p. 69-74
ER  -