AFRICANS LEAVE ASSEMBLY DEBATE; Some Walk Out of U.N. Hall as South African Defends Role in Mandate Area AFRICANS LEAVE ASSEMBLY DEBATE
D P de Villiers, who represented S Africa before Internatl Ct, denies S Africa has been false to her 'sacred trust' in territory adm, s, UN Assembly; holds UN has no right to interfere in affairs of territory; contends League of Nations mandate lapsed with dissolution of League and that since S Africa did not transfer her trusteeship to UN, she has no obligation to rept to UN or to submit to UN supervision; defends application of apartheid to territory; holds ending official distinctions because of race or class would lead to 'chaos'; members of several African delegations walk out during S