(3GdbdH hGeQGVg (B/ s - (3YHOGdYRjR GdTQjas ([S.N] : (3eQcR GdGgQGe ddJQLeI hGdfTQ , s, 1989)
Keywords: (3GdWHs; (3GdGeQGVs; (3VZW GdOes; (3GdbdHs; (3GhYjI OehjIs; (3GdScJI GdbdHjIs; (3GdOhQI GdOehjIs; (3GdTQGjjf hGdGhQOIs; (3GdPHMI GdUOQjIs