(3eYLe GdCdbGH h GdCSeGA GdeSJYGQI aj GdJGQjN GdYQHj h GdESdGej (B/ s - (3GdSjO, aDGO UGdMs ((3HjQhJ (B:s (3OGQ GdYde ddedGjjf,s, 1990)
Keywords: (3eYGLe GdeaQOGJs; (3GdCSeGA GdYQHjIs; (3GdCdbGHs; (3GddZI GdYQHjIs