TY  - BOOK
AU  - Clements F E
AU  -  Long F L
AU  -  Martin E V
TI  - Adaptation and origin  in the plant world
U1  - I:55, J0-;1 
PY  - 1950///
CY  - Waltham
PB  - Chronica Botanica        
KW  -  Plant ecology
KW  - Botany
ER  -