(3SjQI GdbjQhGf (B: (3QSGdJgG GdOjfjI hGdKbGajI ai GdeZQH GdGSdGei (B/ s - (3eMeO GdYQhSi GdeWhis ([S.N] : (3GdOGQ GdYQHjI ddcJGH , s, 1981)
Keywords: (3GdbjQhGfs; (3GdJGQjN GdGSdGeis