(3eLehYI GYeGd GdMdbI GdOQGSjI dbhGfjf GdTgQ GdYbGQi ai GdHdGO GdYQHjI (B/ s - (3GdefXeI GdYQHjI ddJQHjI hGdKbGaI hGdYdhe (B: (3eYgO GdHMhK hGdOQGSGJ GdYQHjIs; (3bSe GdHMhK hGdOQGSGJ GdbGfhfjIs ((3GdbGgQI (B: s (3eYgO GdHMhK hGdOQGSGJ GdYQHjI , s, 1973)
Keywords: (3GdbGfhfs; (3GdbGfhf GdGOGQis; (3GdJhKjb GdYbGQis; (3GdTgQ GdYbGQis; (3GdSLd GdYjfis; (3GdJhKjbs