(3af GdSdhc GdSjGSjs - (3gGjfR jhdGh s; (3JQLeI dLfI ef GdCSGJPI GdLGeYjjfs ((3HjQhJs (3OGQ GdBaGb GdLOjOI,s, 1963)
Keywords: (3af GdSdhc GdSjGSjs; (3GdSdhc GdSjGSjs