(3GdNdGaI GdGehjI (B: (3OQGSI SjGSjI (B/ s - (3YHOGdGejQ YHO MSjf OcSfs ([S.N] : (3OGQ GdfgVI GdYQHjI ddWHGYI hGdfTQ , s, 1973)
Keywords: (3GdJGQjN GdGSdGeis; (3GdOhdI GdGehjIs; (3GdMVGQI GdGSdGejIs; (3GdNdGaI GdGehjIs