000 00242nam a22001097a 4500
082 _a621.384 REY'T
100 _aRYNER, J. H
_969867
245 _aTESTING RADIO SETS
260 _aLONDON
_bCHAPMAN & HALL
_c1950
300 _a215P
942 _cBK
999 _c576958
_d576958