00330nam a2200133Ia 450000500170000008000230001710000170004024500370005726000330009430000160012758300180014394200180016199900170017920260716043649.0  aREF 19.03.01 A6981  aAries, S. J.  aDictionary of telecommunications  bButterworthsaLondonGBc1981  a[2], 329 p.  c3/14/06kJOYD  cMmA6981kREF  c51845d51845