(3GdacQ GdSjGSi GdYQHi (B/ s - (3HGhd, Lhfs; (3eMeO QTGO NejS (B((3eJQLe(B)s; (3QGTO GdHQGhis ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1980)
Keywords: (3JGQjNs; (3GdadGSaIs; (3GdadSaI GdZQHjIs; (3GdYUhQ GdhSWis; (3GhQHGs