LBJ ASKS MANSFIELD'S VIEWS ON UN ARTICLE 19 CONTROVERSY ON NON-PAYMENT OF DUES; ADLAI STEVENSON'S VIEWS; LBJ'S CONCERN ABOUT DOMINICAN REPUBLIC ELECTIONS; MANSFIELD'S VIEWS ON VIETNAM, KY, NEGOTIATIONS WITH VIET CONG; U THANT PEACE EFFORT; LBJ'S UN SPEECH