(3efGUMI GdCeGe hgH Hf efHg dQLd JCKQ HePgH GdNhGQL(B/s - (3GdYHO GdcQje , YHO GdSdGe Hf HQLS s ((3GdQjGV(B- (3GdSYhOjI(B:s (3ecJHI GHf bJjHI,s, 1998)
(3GdeMJhjGJ (B: s
(3HHdjhLQGajI (B: (3UaMI s
Keywords: (3GdOYhI GdESdGejIs -- (3GdNhGQLs