000 00277nam a2200121Ia 4500
008 220201s1979 xx 000 0 eng d
082 _a621.381
_bGUP
100 _aGupta, K C
245 0 _aMicrowaves
260 _aNew Delhi
_bEastern Ltd.
_c1979
300 _a242
942 _2ddc
999 _c24326
_d24326