(3NWa GdWGFQGJ (B:s (3OQGSI aj GdbGfhf GdOhdj hGdYdGbGJ GdOhdjI (B/s - (3GdfGUQj, gjKe CMeOs ((3HjQhJ (B:s (3GdeDSSI GdYQHjI ddOQGSGJ hGdfTQ,s, 1988)
(3HHdjhLQGajI (B: (3U(B. 405-416.s
Keywords: (3NWa GdWGFQGJs -- (3bhGfjf hJTQjYGJs; (3GdWjQGfs -- (3bhGfjf hJTQjYGJs