TY  - BOOK
AU  - Canby,Thomas Y.
TI  - Our changing earth
SN  - 870449109
U1  - 363.7 C36 
PY  - 1994///
CY  - New York
PB  - National Geographic Society, 
KW  - Environment degradation
KW  - Citizen participation
KW  - Environmentalism
N1  - Index
ER  -