(3GdCRgGQ h GdKeGQ h GdHPhQ (B/ s - (3HGQcQ, HQJGehQjSs; (3Sdje, eMeO UGHQs ((3GdbGgQg (B:s (3GdLeYjI GdeUQjI dfTQ GdeYQaI h GdKbGaI GdYGdejI,s, 1981)
Keywords: (3GdfHGJGJs