TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:3025-(Pt.31)-1988. Indian standard methods of sampling and test (physical and chemical) for water and waste water. Pt.31 : phosphorus
U1  - IS Code 
PY  - 1989///
CY  - New Delhi
PB  - Bureau of Indian Standards
ER  -