TY  - BOOK
TI  - Policies and systems of environmental impact assessment 
SN  - 9211164923
AV  - GE170 
PY  - 1991///
CY  - New York
PB  - United Nations
KW  - Environmental impact analysis
KW  - Environmental policy
N1  - "ECE/ENVWA/15"--T.p. verso - "United Nations publication sales no. E.90.II.E.36"--T.p. verso
ER  -