TY  - BOOK
AU  - Hammond,Allen L.
ED  - World Resources Institute.
TI  - Environmental indicators: a systematic approach to measuring and reporting on environmental policy performance in the context of sustainable development 
SN  - 1-56973-026-1
AV  - GE140 E58
PY  - 1995///
CY  - Washington, D.C.
PB  - World Resources Institute
N1  - May 1995
ER  -