TY  - BOOK
ED  - Bureau of Indian standards
TI  - Methods of sampling and test (physical and chemical ) for water and wastewater: Part 20 Dispersion
U1  - 628.1/.3:532.696.22 
PY  - 1985///
CY  - New Delhi
PB  - Bureau of Indian standards
KW  - IS:3025(Part20)-1984
ER  -