A.T.&T. FIRST TO EARN $1 BILLION IN QUARTER
AT&T repts profits of $1.01-billion in qr ended Aug 31; is 1st publicly owned corp in US to earn over $1-billion in any 3-mo period; previous high for 3-mo period was set by GM in 2d qr of '76, with earnings of $909-million; AT&T chmn John D deButts attributes gain in earnings in part to gen improvement in econ (M)