00865cam a2200289 a 4500 1387565 BD-DhUL 20140724105352.0 820308s1982 njua 001 0 eng 82003834 013931220X (pbk.) 0139312382 DLC DLC BD-DhUL TK5105 .D483 1982 001.644 19 D431t Derfler, Frank J. TRS-80 data communication systems / Frank J. Derfler, Jr. Englewood Cliffs, N.J. : Prentice-Hall, c1982. xi, 159 p. : ill. ; 24 cm. "A Spectrum book." Includes index. Data transmission systems. TRS-80 computers. T.R.S.-80 data communication systems. 7 cbc orignew 1 ocip 19 y-gencatlg ddc BK 421 421 0 0 ddc 0 001_644000000000000_D431T 0 NFIC 711 DUSL DUSL GEN 2014-07-24 Purchase 001.644 D431t 304 2014-07-24 1 2014-07-24 BK