(3eHGOF GdGbJUGO GdOhdi(B.s (3OQGSI EfJbGFjI ai eXGgQ eTcdGJ GdYdGbGJ GdEbJUGOjI GdOhdjI (B/s - (3YGOd GMeO MTjTs ((3GdGScfOQjI (B:s (3eDSSI GdKbGaI GdLGeYjI (B,s, 1981)
. 399-405 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdGbJUGO GdOhdis