000
00271nam a2200121Ia 4500
008
220201s2003 xx 000 0 eng d
082
_a
621.84
_b
NPT
100
_a
NPTI
245
0
_a
Control valves selection
260
_a
delhi
_b
NPTI
_c
2003
300
_a
73
942
_2
ddc
999
_c
37426
_d
37426