(3jG aJGI GdESdGe GbQFj MJi dG JNOYj (B/s - (3GdHdjgj, UGdM Hf EHQGgje s 1331-1410 (3gLQjs ((3GdbGgQI (B- (3eUQ (B:s (3ecJHI GHf JjejI,s, 1989)
Keywords: (3bVGjG EUdGM ELJeGYjs -- (3GdeQCI GdeSdeIs -- (3MLGH GdeQCIs -- (3GdJHQLs