TY  - BOOK
AU  - Wheal, Caroline.
ED  - United Nations Environment Programme.
TI  - Freshwater pollution
AV  - TD425 .W49 1991
U1  - 363.7394 20
PY  - 1991///
CY  - Nairobi
PB  - UNEP
KW  - Water
KW  - Pollution
KW  - Water-supply
N1  - Cover title; "Based on Global freshwater quality (Blackwell, 1990) and other sources"--T.p. verso; Includes bibliographical references (p. 35-36)
ER  -