(3JGQjN GdKhQI GdQhSjI (B/ s - (3JQhJSci, djhfs; (3GdgjKe GdGjhHis; (3GcQe OjQis ((3HjQhJ (B: s (3GdeDSSI GdYQHjI ddOQGSGJ hGdfTQ , s, 1971)
Keywords: (3GdGJMGO GdShajJis; (3GdTjhYjIs; (3GdJGQjNs; (3QhSjGs; (3GJMGO GdLeghQjGJ GdShajJjIs