TY  - BOOK
AU  - Heywood,V.H.
ED  - Systematics Association.
TI  - Taxonomy and ecology: proceedings of an international symposium held at the Department of Botany, University of Reading 
T2  - The Systematics Association special volume
SN  - 0123469600
PY  - 1973///
CY  - London
PB  - Academic Press
KW  - Botany
KW  - Classification
KW  - Congresses
KW  - Ecology
ER  -