TY  - BOOK
AU  - Watts, Simon,
AU  - Halliwell, Lyndsay,
TI  - Essential environmental science: methods & techniques 
SN  - 0415132460 (cloth)
U1  - 628  20
PY  - 1996///
CY  - London,  New York
PB  - Routledge
KW  - Environmental sciences
KW  -  Experiments
KW  -  Methodology
KW  -  Technique
N1  - Includes bibliographical references and index
ER  -