(3OQGSGJ ai HYV GdbhGfjf GdefXeI ddMQjGJ (B/s - (3hMjO QCaJs ([S.N] : (3efTGI GdeYGQa GdGSdGejI , s, 1981)
Keywords: (3GdbGfhfs; (3GdbGfhf GdGOGQis; (3GdbGfhf GdOSJhQis