TY  - BOOK
AU  - Halliwell, Lyndsay, 1964-
AU  - Watts, Simon, 1958-
TI  - Essential environmental science : methods & techniques
SN  - 0415132479
AV  - GE 70 Ess 
PY  - 1996///
CY  - London
PB  - Routledge
KW  - ENVIRONMENTAL SCIENCES--EXPERIMENTS--TECHNIQUES
KW  - ENVIRONMENT
KW  - ENVIROMENTAL SCIENCES--EXPERIEMENTS--METHODOLOGY
N1  - Includes bibliographical references and index
ER  -