(3eYLe CdaGX GddgLI GdchjJjI (B:s (3OQGSI hJMdjd ddCdaGX (B/s - (3GdSHYGf, djdi Nda CjhHs ((3GdchjJ (B:s (3TQcI GdQHjYGf,s, 1989)
(3HHdjhLQGajI (B: (3U(B. 249.s
Keywords: (3GddZI GdYQHjIs -- (3dgLGJs -- (3GdchjJs -- (3eYGLes