000 00305nam a2200121Ia 4500
080 _a09.01.04 G974
100 _aGumbs, Barbara
245 _aProducer services : telecommunication and data services
260 _b[s.n.]
_a[S.l.]
_c1989
300 _a16 leaves
583 _c7/13/07
_kJOYD
942 _cM
_mG974
999 _c31539
_d31539