(3GdGbJUGO GdSjGSj(B.s (3GdLRA GdKGfj,s (3GdbjeI hGdJhRjY (B/s - (3QaYJ GdeMLhHs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1972)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdGbJUGOs