. (3eCRe GdTHGH GdYdGFbj hGTcGd GdJYGWj eYgs - . (3MWH, RgjQs; (3ecj, YHGSs ((3HjQhJs (3eYgO GdGfeGA GdYQHjs, 1981)
(3eQGLY aj BNQ GdcJGHs
Keywords: (3GdYdGbGJ GdGSQjIs; (3GdeQGgbIs