(3cJGH GdNjd (B: s (3eWdY Gdjef hGdGbHGd ai GfJbGA cJGH GdGMJaGd (B/ s - (3GHf LRi GdcdHi (B: (3GHh GdbGSe eMeO Hf GMeO Hf eMeO Hf YHOGddg Hf jMjis; (3eMeO GdYQHi GdNWGHis ((3HjQhJ (B: s (3OGQ GdYQHjI ddYdhe , s, 1986)
Keywords: (3GdGOH GdYQHis; (3GdGfOdSs; (3GdNjd GdYQHjIs; (3GdNjds; (3GdYGOGJ hGdSdhcs