(3aJM GdYQH deUQ (B/ s - (3HJdQ, GdaQjO(B. (3L (B.s; (3eMeO aQjO GHhMOjOs ((3GdbGgQI (B: s (3ecJHI eOHhdi , s, 1990)
Keywords: (3aJM eUQs