TY  - BOOK
AU  - Billings [w D], 
TI  - Plants And The Ecosystem
U1  - 581.7 
PY  - 1965///
CY  - Kingston
PB  - Macmillan and Co., Limited
KW  - General Stack
KW  -   Plant ecology
KW  - Specific topics in natural history
KW  - Botany
ER  -