TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:3025-(Pt.34)-1988. Indian standard methods of sampling and test (physical and chemical) for water and waste water. Pt.34 : nitrogen
U1  - IS Code 
PY  - 1999///
CY  - New Delhi
PB  - Bureau of Indian Standards
ER  -