(3GdZRh GdacQi ai GdefGgL GdOQGSjI (B((3GhdG(B) (3ai GdabjOI (B/ s - (3Ydi dHfs ([S.N] : (3OGQ GdhaGA ddWHGYI hGdfTQ hGdJhRjY , s, 1987)
Keywords: (3GdadSaI GdGSdGejIs