(3GdUhQI GdafjI ai GdeKd GdbQGfs ([S.N] : (3OGQ GdMbjbI ddWHGYI hGdfTQ , s, 1992)
Keywords: (3GddZI GdYQHjIs; (3GdHdGZI GdYQHjIs; (3GdHOjYs; (3GdGeKGds; (3GdbQGfs