000
00221nam a2200073 4500
080
_a
_b
245
_a
IS: 2505 - 1980; General requirements for concrete vibrators, immersion type
700
_a
INDIAN STANDARDS INSTITUTION
260
_a
New Delhi
_b
BIS
_c
1980
300
_a
11p
999
_c
29115
_d
29115