000 002680000a22001210004500
008 160513b1946 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a621.3192
_bM5
942 _cBK
100 _aMitchell
245 _aAn introduction to transmission
260 _c1946
999 _c9333
_d9333