(3Yhf GdeYHhO(B:s (3TQM Sff GHi OGhO (B/ s - (3YXje GHGOi, GHh GdWjH TeS GdMbs; (3GHf bje GdLhRjI(B: (3TeS GdOjf GHh YHOGddg eMeO Hf GHi HcQs ((3HjQhJ (B: s (3OGQ GdcJH GdYdejI ddfTQ hGdJhRjY , s, 1990)
Keywords: (3Gdabg GdGSdGeis; (3GdGMGOjK GdfHhjIs; (3JaGSjQs