000 00282nam a22001217a 4500
020 _a8185421560
082 _a630.715
100 _aRay, G.L.
245 _aExtension Communication and Management
250 _a4th ed
260 _aCalcutta
_bNaya Prokash
_c1999
300 _a325pp
999 _c88216
_d88216