000
00257nam a2200121Ia 4500
008
220201s1967 xx 000 0 eng d
082
_a
530
100
_a
Jain, PK
245
0
_a
Engineering physics
260
_b
Delhi
_c
1967
300
_a
904
942
_2
ddc
999
_c
74489
_d
74489