(3GdYUQjhf(B: (3eYJRdI Gdjhe (B/ s - (3jhSa ceGds ([S.N] : (3OGQ GdhaGA ddWHGYI hGdfTQ hGdJhRjY , s, 1986)
Keywords: (3GdJGQjN GdGSdGeis; (3Gdabg GdGSdGeis; (3GdaQb GdGSdGejIs; (3GdeYJRdIs