TY  - GEN
AU  - Watts , Simon ;ed.
AU  - Halliwell , Lyndsay ;ed.
TI  - Essential environmental science: methods and techniques
SN  - 0415132479
U1  - 628 
PY  - 1996///
CY  - London
PB  - Routledge
KW  - ENVIRONMENTAL SCIENCES - EXPERIMENTS METHODOLOGY
KW  - ENVIRONMENTAL PROTECTION ENGINERING
ER  -