TY  - BOOK
AU  - Heywood V H 
AU  - V H Heywood
TI  - Botanical systematics : : an occasional series of monographs
SN  - 0123469015
U1  - 583.32 HAN F 
PY  - 1976///.
CY  - London : 
PB  - Academic press, 
KW  - Plants -- Classification
N1  - Includes general index
ER  -