TY  - BOOK
AU  - Tivy, Joy
AU  - O'Hare, Greg (jt.auth.)
TI  - Human impact on the ecosystem
SN  - 005003203
U1  - 574.5223 
PY  - 1981///
CY  - Edinburgh
PB  - Oliver & Boyd
KW  - Man-Influence on nature
N1  -  PB
ER  -