(3YQGFS ai GdehdO (B- (3OQGSGJ Mhd GdeQCI GdYQHjI (B/ s - (3eMeO YhV NejSs; (3efi ejNGFjds ([S.N] : (3OGQ GdYQHi ddfTQ hGdJhRjY , s, 1977)
Keywords: (3GdGOH GdYQHis; (3GdeQCI ai GdGOHs; (3JGQjN hfbOs; (3GdeLehYGJs