Senate Democrats Seek Big Majority For Atomic Treaty; DEMOCRATS SEEK TEST BAN BACKING Hickenlooper Balks
Sen Dem leaders seek to muster near-inanimous vote for ratification; some Repubs and Southern Dems cautious; Mansfield, Sparkman comment; plan to send Sen reprs to Moscow for signing may be dropped because of rept Hickenlooper, sr Repub on Foreign Relations Com, would not go
