TY  - BOOK
AU  - Smil,Vaclav
TI  - Global ecology: environmental change and social flexibility 
SN  - 0415098866
AV  - GE170 .S65 1993
PY  - 1993///
CY  - London
PB  - Routledge
KW  - Environmental policy
KW  - Sustainable development
ER  -