(3GdfhGOQ GdTYHjI GdeUQjI(B: (3OQGSI JGQjNjI hGLJeGYjI (B((3GdLRA GdGhd(B) / s - (3GHQGgje GMeO TYdGfs ([S.N] : (3ecJHI eOHhdi , s, 1993)
Keywords: (3GdahdcdhQs; (3GdfhGOQGdYQHjIs; (3GdGOH GdTYHis; (3GdahdcdhQ GdeUQis; (3GdGOH GdTYHi (B- (3GdYGde GdYQHis