(3KhQI GdeYdheGJs - (3eGjQfZ(B. (3dfs ((3GdeDSSI GdYQHjI ddOQGSGJ hGdfTQs (3HjQhJs, 1989)
(3JQLeI eMeO GHQGgje GdWQjajs
Keywords: (3GdJcfhdhLjGs; (3GdeYdheGJ(B-(3KhQIs; (3GdMGShHs