000 00303nam a2200121Ia 4500
100 _aTeleconferencing
020 _a0-08-028-597X
942 _cBK
245 _aTeleconferencing
_bSate of the art report
260 _aPergamon infotech limited, England
_c1985
082 _a658.5036 Tel
300 _aix,139
999 _c16715
_d16715