(3GdYTb hGdehJ ai GdRef GdMhGTi GddGR (B: (3GdcJGH GdKGfi (B/ s - (3GdWGgQ hWGgQs ([S.N] : (3OGQ GHf QTO ddWHGYI hGdfTQ , s, 1983)
Keywords: (3GdGOH GdYQHis; (3GdbUI GdYQHjIs