000
00225nam a2200073 4500
080
_a
_b
245
_a
IS: 6804 - 1972 : Specification for Glass Electrodes for Direct Reading pH Meter
700
_a
INDIAN STANDARDS INSTITUTION
260
_a
New Delhi
_b
BIS
_c
1973
300
_a
12p
999
_c
26670
_d
26670