TY  - BOOK
AU  - Wulff E V
TI  - Historical plant geography :  An introduction. Tr b   
U1  - U35, J0 
PY  - 1950///
CY  - Walthamm
PB  - Chronica Bolanica comp        
KW  - Biogeography
N1  - Bibliography Chapterwise
ER  -