TY  - BOOK
AU  - Weizsacker, Ernst von
AU  - Lovins, Amory B. 
AU  - Lovins, L. Hunter
TI  - Factor Four: Doubling Wealth Halving Resource Use
SN  - 9781853834073
PY  - 2005///
CY  - London
PB  - Earthscan 
KW  - Economics
KW  - Economic Development
N1  - Includes References and Index
ER  -