000 00339nam a2200121Ia 4500
008 211209s1975 xx 000 0 und d
041 _aeng
082 _a621.384 187 N75 MIN
100 _aMINISTRY OF POSTS OF TELECOMMUNICATIONS
245 _aHAND BOOK OF RADIO OPERATORS
260 _aNEW DELHI
_bS CHAND AND COMPANY
_c1975
300 _a269
999 _c16664
_d16664