TY  - BOOK
AU  - Tivy, Joy
TI  - Agricultural ecology
SN  - 0582301637
AV  - S589.7 .T7 1990
PY  - 1990///
CY  - New York
PB  - Longman Scientific &Technical
KW  - Ecology
KW  - Agriculture (General)
N1  - Includes bibliographies p.261-280 and index
ER  -