TY  - BOOK
AU  - Bureau of Indian Standards
TI  - Specification for Direct Reading pH Meters (IS : 2711 - 1979) Reaffirmed 1993
U1  - IS : 2711 -1979 
PY  - 1980///
CY  - New Delhi
PB  - Bureau of Indian Standards
KW  - Indian Standard - IT
N1  - IS : 2711 -1979
ER  -