TY  - BOOK
T1  - Human impact on the ecosystem
T2  - Conceptual frameworks in geography
A1  - Tivy, Joy
A2  - O'hare, Greg
A2  - Rooke, Ann
A2  - Skinner, Andy
LA  - English
PP  - Edinburg
PB  - Oliver & Boyd
YR  - 1981
UL  - https://tuklas.up.edu.ph/Record/UP-99796217602001434
OP  - 243
CN  - GF 75 T58
KW  - Man : Influence in nature.
KW  - Human ecology.
ER  -