(3GdHfjI GdHWQcjI (B: s (3HMK aj GdeLJeY GdYQHj GdeYGUQ (B/ s - (3TQGHj, gTGes ((3HjQhJ (B:s (3OGQ GdWdjYI ddWHGYI h GdfTQ,s, 1987)
Keywords: (3GdeLJeY GdYQHjs