TY  - BOOK
AU  - Stebbins,G.Ledyard
TI  - Flowering plants: Evolution above the species level 
SN  - 0674306856
U1  - 582/.13/0438 
PY  - 1974///
CY  - Cambridge, Mass.
PB  - Belknap Press of Harvard University Press
KW  - Plants
KW  - Evolution
KW  - Angiosperms
N1  - Includes index; Bibliogr.: p. [356]-380
ER  -