TY  - BOOK
AU  - Willis, A. J.
TI  - Introduction to plant ecology: a guide for beginners in the study of plant communities 
SN  - 0045810095
U1  - 581.7 
PY  - 1973///
CY  - London
PB  - George Allen & Unwin
KW  - Plant ecology
N1  - Includes index
ER  -