(3GdJQHjI GdUgjhfjI ef YfUQjI GdJhQGI Edi OehjI GdEMJdGd (B/ s - (3GdHGT, MSfs ((3HjQhJ (B:s (3OGQ bJjHI ddWHGYI h GdfTQ h GdJhRjY,s, 1990)
Keywords: (3GdJYdjes; (3ESQGFjds