TY  - RPRT
TI  - Monitoring the environment: taking a historical perspective.
AU  - Hugh S Gorman
AU  - Erik M Conway
PY  - 2005
DO  - 10.1007/s10661-005-0755-0
UR  - https://pubmed.ncbi.nlm.nih.gov/16001708/
ID  - 16001708
ER  -