(3GdhdGjGJ GdeJMOI hGdGJMGO GdShajGJi hGdUQGY ai GdTQb GdChSW (B1967-1987 /s - (3ZGRj QHGHYIs ((3YeGf (B: s (3OGQ GdacQ,s, 1989)
. 228-219 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdfRGYGJ Hjf GdOhds; (3GdbGfhf GdOhdj GdYGes