(3GdKeQ GdOGfj aj JbQjH GdeYGfj (B/s (3TQM QSGdI GHf GHj RjO GdbjQhGfjs - (3GdCRgQj , UGdM YHO GdSejY GdBHj (B.s ((3HjQhJ (B:s (3OGQ GdacQ,s, 1970)
Keywords: (3Gdabg GdeGdcjs