(3bGfhf GdfaW(B: (3GdGJLGgGJ GdMOjKI ai JMOjO GdbGfhf GdPi jMce GJaGbjGJ GdJfejI GdGbJUGOjI GdOhdjI (B((3OQGSI ebGQfI(B) / s - (3GMeO YHOGdMejO YThTs ([S.N] : (3eDSSI THGH GdLGeYI , s, 1989)
Keywords: (3GdbGfhfs; (3GdHJQhds; (3bhGfjf hJTQjYGJs; (3GdbGfhf GdOhdi GdNGUs; (3GdbGfhf GdebGQfs