2 Arab Raiders in Israel Kill Moslem, Surrender
Dec 1: 2 armed Arab guerrillas seize house in Upper Galilee village of Rihaniya on Nov 30, kill Israeli Moslem and later surrender to Israeli forces; Rihaniya is Circassian village 3 miles south of Lebanese border; Circassians are descendents of Moslems from Caucasus; Israeli mil hq says gunmen infiltrated from Lebanon and reptdly believed they entered Jewish village; guerrillas reptdly killed Subhi Abzak and seriously injured his wife when they entered his 2-story house; at sound of gunfire, villagers surrounded house; gunmen refused to give themselves up to villagers and later surrendered to Israeli authorities; map (M)