(3GdJfejI GdJcfhdhLjI eaghegG heJWdHGJgG (B/ s - (3jYbhH agO GdYHjOs ([S.N] : (3GdOGQ GdOhdjI ddfTQ hGdJhRjY , s, 1989)
Keywords: (3GdJcfhdhLjGs; (3GdYdhe GdJWHjbjIs; (3GdJcfhdhLjG hGdOhdIs