(3GdeQTO GdbGfhfj aj GdELQGAGJ GdYedjI CeGe GdeMGce (B((3GdLRFjI hGdGHJOGFjI(B) (3hGdUjZ GdbGfhfjI(B.s (3GdbSe GdChd (B/s - (3fGjd, SjO CHh RjO(B.s ([(3O(B. (3e (B:s (3O(B. (3f(B](3,s, 1991)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdJOGYj CeGe GdeMGces -- (3eUQs; (3GdUjZ GdbGfhfjIs -- (3eUQs