(3LQGFe GdeNOQGJ (B/s - (3EOhGQO ZGdj GdOgHjs ((3GdbGgQI (B:s (3ecJHI ZQjH,s, 1988)
(3jTJed Ydi EQLGYGJ HHdjhLQGajIs
Keywords: (3GdJTQjYGJ GdeJYdbI HGdeNOQGJs