TY  - BOOK
AU  - BOTKIN,DAVID
AU  - KELLER,EDWASD
TI  - ENIVRONMENTAL SCIENCE: EARTH AS A LIVINING PLANET / 
U1  - 363.7 
PY  - 1995///
CY  - [S.N] : 
PB  - JOHN WILEY AND SONS. INC ، 
KW  - CASE STUDIES
KW  - BIOLOGICAL DIVERSITY
KW  - ENVIRONMENTAL SCIENCE
KW  - HUMAN ECOLOGY
ER  -