000 00312nam a2200133Ia 4500
008 220201s1978 xx 000 0 eng d
082 _a530
100 _aKultar Singh etal
245 0 _aPolytechnic Applied Physics
250 _a4th
260 _bKatson Publishing House
_c1978
300 _a174
942 _2ddc
999 _c80631
_d80631