000
00284nam a2200109Ia 4500
008
220201s1972 xx 000 0 eng d
100
_a
IS 6426 1972
245
0
_a
SPECIFICATION FOR PILE DRIVING HAMMER
260
_a
DELHI
_b
INDIAN STANDARD INSTITUTE
_c
1972
300
_a
4
942
_2
ddc
999
_c
89666
_d
89666