000 00304pam a2200133a 44500
082 _a384.6
_bM823t
100 _aMorgan, Thomas Jefferson
245 1 _aTELECOMMUNICATION ECONOMICS
260 _aLondon
_bMacdonald
_c1958
300 _a452
650 _aTelephone
964 _gCIRC
997 _a3594 C
999 _c424243
_d424243