WASHINGTON ACTS TO SUPPORT LAOS; Delegates of Southeast Asia Treaty Group Called In by State Department Washington, in SEATO Session, Acts to Support Plea by Laos
US State Dept officials indicate US will back Laos appeal; Under Sec Dillon calls in SEATO reprs for conf; SEATO protocol placing Laos under its protection and enabling it to send in troops when requested by Laos revd; speculation on UN action