000
00274nam a2200121Ia 4500
100
_a
Gupta & Kumar
942
_c
BK
654
_a
calculation
245
_a
Workshop Calculation & Science
260
_b
DHANPAT RAI AND SONS
_a
Delhi
_c
1972
300
_a
282
546
_a
ENGLISH
999
_c
32394
_d
32394