TY  - BOOK
AU  - Stebbins, G.Ledyard
TI  - Variation and evolution in plants
T2  - Columbia Biological Series; no.16
U1  - 581.15:575 J0 
PY  - 1950///
CY  - Calcutta
PB  - Oxford book company
KW  - G.Ledyard Stebbins
KW  - Variation-Biology,Evolution,Botany-variation
ER  -