TY  - BOOK
ED  - WHO
TI  - Drinking-water and sanitation 1981 - 1990 / World Health Organization
SN  - 9241560681
U1  - B 16.31 WHO -10079   
CY  - Geneva, 1981.
KW  - Water - Health aspects
KW  - Sanitation
KW  - Rural
KW  - HEA
N1  - ISBN 92 4 156068 1
ER  -