TY  - BOOK
AU  - Ayres Robert U
AU  -  Ayres Leslie W
TI  - Industrial ecology :  Towards closing the materials cycle
SN  - 1858983975
U1  - "X9:(G:5), N6" 
PY  - 1996///
CY  - Cheltenham
PB  - Edward Elgar      
KW  - Industrial Economy
ER  -