TY  - BOOK
AU  - Spellerberg, Ian F.
TI  - Monitoring ecological challenge
SN  - 0521366623
U1  - 363.7063 21st ed.
PY  - 1991///
CY  - New York
PB  - Cambridge University Press
KW  - Ecology
KW  - Environmental monitoring
KW  - Environmental policy
N1  - Index: p. 328-34
ER  -