TY  - BOOK
ED  - Indian standards institution 
TI  - Indian standard methods of test for soils Part xxv:  determination of total soluble sulphates
U1  - 624.131.371:543:549.514.5 
PY  - 1978///
CY  - New Delhi
PB  - Indian standards institution 
KW  - IS:2720(Part xxv)-1977
ER  -