TY  - BOOK
ED  - United Nations Environment Programme.
ED  - Water Supply and Sanitation Collaborative Council.
ED  - World Health Organization.
TI  - Water pollution control: a guide to the use of water quality management principles 
SN  - 0419229108 (pbk.)
AV  - TD430 WAT 
PY  - 1997///
CY  - London, New York
PB  - E & FN Spon
KW  - Water quality management
KW  - Water
KW  - Purification
KW  - Pollution
KW  - Control
N1  - "Published on behalf of UNEP, United Nations Environment Program, Water Supply & Sanitation Collaborative Council, World Health Organization."; Includes bibliographical references and index
ER  -