(3GdhUGjG hGdhba aj GdTQjYI GdESdGejI (B:s (3OQGSI ebGQfI Hjf eTQhY GdbGfhf GdGJMGOj dOhdI GdEeGQGJ GdYQHjI GdeJMOI heTQhY GdbGfhf GdYQHj GdehMO deLdS hRQGA GdYOd GdYQH (B/ s - (3WfWGhj, eMehO eMeOs ([(3O(B. (3e(B.] :s [(3O(B. (3f(B.](3,s, 1989)
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Keywords: (3GdhUGjG (B((3abg ESdGej(B)s; (3GdhUGjG (B((3bGfhf(B)s -- (3GdEeGQGJ GdYQHjI GdeJMOIs; (3GdhUGjG (B((3bGfhf(B)s -- (3GdHdGO GdYQHjIs; (3Gdhbas -- (3bhGfjf hJTQjYGJs -- (3GdHdGO GdYQHjIs; (3Gdhbas -- (3bhGfjf hJTQjYGJs -- (3GdEeGQGJ GdYQHjI GdeJMOIs