(3GdehGba GdfbOjI Hjf GdPGJ hGdehVhY (B((3OQGSI dfbO GdbUI GdbUjQI(B) / s - (3cQje GdhGFdis ([S.N] : (3GdYQHi ddfTQ hGdJhRjY , s, 1986)
Keywords: (3GdbUU GdYQHjIs