(3GdeUGQa hGdCYeGd GdeUQajI ai GdTQjYI GdESdGejI hGdbGfhf (B/s - (3ZQjH GdLeGds ((3GdbGgQI (B:s (3OGQ GdGJMGO GdYQHi ddWHGYI,s, 1972)
(3eQGLY GdOQGSGJ GdebGQfI ddCfTWI GdEbJUGOjI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdeUGQa GdESdGejIs -- (3GdeUGQa GdUQajIs