(3GdTYQ hGdTYQGA Gh WHbGJ GdTYQGAs - (3GdOjfhQj,GHj eMeO YHOGddg Hf eSde Hf bJjHIs ((3HjQhJ(B:s (3OGQGdcJH GdYdejI,s, 1981)
Keywords: (3GdTYQ GdYQHjs