000 00460 a2200253 4500
001 97881
020 _a1
041 _aeng
080 _a621,396 Wit
245 _aRadio upkeep and repairs. 7th ed.
250 _a
260 _a
260 _bPitman, London,
260 _c1954
300 _ap.iv, 220, illus., 21cm.,
300 _c
490 _a
100 _aWitts, A.T.\
700 _a
650 _a
650 _a
942 _cBK
942 _2UDC
999 _c50891
_d50891