机读格式显示(MARC)
- 000 00547nam2 2200181 4500
- 245 1_ |a Analog and digital communication:concepts,sustems,applications,and services in electrical dissemination of aural,and data information |c Gregg,W.David. |g |A ANALOGAN,SUSTEMS,APPLICAT,ANDS |F GREGG,WDAVID
- 260 __ |a New York |b Wiley |c 1977
- 700 _0 |a Gregg,W.David. |A GREGG,WDAVID |4 著
- 905 __ |a HIEL |d TN91/G1