(3GdMeGjI GdLfGFjI ddfXGe GdYGe aj GdYbhO GdeOfjI aj GdbGfhfjf GdeUQj hGdaQfSj (B/s - (3GdZQjH, eMeO YjOs ((3GdbGgQI (B:s (3eMeO YjO GdZQjH,s, 1987)
(3HHdjhLQGajI (B: (3U(B. 239-246.s
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Keywords: (3GdbGfhf GdJLGQjs; (3GdYbhO (B((3bGfhf eOfj(B)s -- (3eUQs; (3GdYbhO (B((3bGfhf eOfj(B)s -- (3aQfSGs; (3GdbGfhf GdLfGFjs