(3Odjd GdJZPjI ddYGedjf ai eLGd JfejI GdeLJeY ai GdefGWb GdGSJhGFjI (B/ s - (3GdeYgO GdcQjHi ddJZPjI hGdWYGes; (3SdGe eMehO GdHGHdi(B((3eJQLe(B)s ([S.N] : (3ejOJh ddJfejI hGdQYGjI GdUMjI , s, 1990)
Keywords: (3GdJfejI GdGLJeGYjIs; (3GdJZPjIs; (3GdUMIs