(3YdGbGJ GdJQHI HGdfHGJ (B/ s - (3GdQGTOj, QGVj cGXes ((3GdHUQI (B:s (3hRGQI GdJYdje GdYGdj h GdHMK GdYdej (B- (3LGeYI GdHUQI,s, 1987)
Keywords: (3GdJQHIs; (3GdRQGYIs