(3JWqhQ GdacQ GdJQHhjs (3O(B. (3aQjO fqLGQ s - (3O(B. (3fqLGQ,(B, (3aQjOs ((3HjQhJs (3GdeQcR GdJQHhj ddHMhK hGdGfeGAs, 1980)
Keywords: (3GdJQHjI hGdJYdje (B-- (3GdacQ GdJQHhj s; (3GdJQHjI hGdJYdje (B-- (3adSaI GdacQ GdJQHhj s; (3GdacQ GdJQHhj (B-- (3JWhQs