(3fSGA GdfHi Ydjg GdUdGg hGdSdGe (B/ s - (3YGFTI YHOGdQMefs ([S.N] : (3OGQ GdgdGd ddWHGYI hGdfTQ , s, 1954)
Keywords: (3RhLGJ GdfHi Udi Gddg Ydjg hSdes; (3GdeQCI ai GdGSdGes