REDS' SUBVERSION OF TROOPS IN LAOS WORRIES CAPITAL; Spreading Defections Laid to Pathet Lao Pressure-- Chinese Force Lingers Troops Under Red Command Reds Infiltrate Forces LAOS DEFECTIONS CAUSE U.S. WORRY
US worried by continued subversive activities of Pathet Lao, especially drive to have neutralist troops defect, and by continued presence of N Vietnamese troops and Communist Chinese workers and technicians; details