Rejects Cambodian charges against Thailand as contained in letters from Cambodia dated 6 and 28 Dec. 1966 and 4, 12, 19, 30 Jan. and 6 Feb. 1967 concerning laying of mines in Cambodia between 21 Oct. 1966-9 Jan. 1967; further reports armed incidents by Cambodians at the Thai border during the period 6 Dec. 1966-15 Feb. 1967.