000 00261nam a22001097a 4500
020 _a0-13-638056-5
082 _a621.3827 GOW'O
100 _aGOWAN, JOHN
_957183
245 _aOPTICAL COMMUNICATION SYSTEM
260 _aLONDON
_bPRENTICE HALL
_c1983
942 _cBK
999 _c567476
_d567476