000 00321pam a2200133a 44500
008 160408b1976 xxu||||| |||| 00| 0 eng d
020 _a0273408461
082 _a621.381
_bR298T
100 _aRenton,R.N.
245 1 _aTELEGRAPHY
260 _aCarlton
_bPitman Publishing
_c1976
964 _gCIRC
997 _aA51684 s C
999 _c283799
_d283799