-凯发平台

hea|  |00738nam0 2200265   45  
000|  |143149
001|  |97001699
005|  |970613075630.0
011|  |▼a0305-3601
092|  |▼acn▼b734c0007
100|  |▼a19920916a19749999m  y0engy0120    ba
101|0 |▼aeng
102|  |▼agbr
110|  |▼aaha    0uu0
200|10|▼acommunication & broadcasting
207| 0|▼av.1 (1974)-
210|  |▼achelmsford▼cmarconi co.
436| 1|▼1011  ▼a0032-2334▼15301 ▼apoi-
   |  |nt-to-point communications
436| 1|▼1011  ▼a0038-1829▼15301 ▼asou-
   |  |nd and vision broadcasting
436| 1|▼15301 ▼acommunication systems
530|0 |▼acommunication & broadcasting
531|  |▼acommun. broadcast.
541|1 |▼a（英）通信与广播
690|  |▼atn
905|  |▼a801▼d/▼e▼f4