TY  - BOOK
TI  - Environmental data report: United Nations environment programme
SN  - 0631169873
U1  - 363.73 21st ed.
PY  - 1989///
CY  - Massachusetts
PB  - Blackwell Reference
KW  - Environmental monitoring
KW  - Environmental science
N1  - At the head of title: United Nations environment programme
ER  -