TY  - BOOK
AU  - Wulff E V
TI  - Introduction to historical plant geography
T2  - New series of plant science books; 10
U1  - I:5, J0 
PY  - 1950///
CY  - Waltham
PB  - Chronica Botanica        
KW  -  Plant ecology
KW  - Botany
N1  - Includes references
ER  -