TY  - BOOK
AU  - Lloyd Barry
AU  -  Melmer Richard
TI  - Surveillance of drinking waterquality in rural are
SN  - 0582063302
U1  - X 9(D85).1(X).N9, N1 
PY  - 1991///
CY  - New York
PB  - Longman Scientific and Technical USA     
KW  - Electrical
N1  - World Health Organization; United Nations Environment Programes
ER  -