(3GdJPcQI GdSYOjI ai GdGTYGQ GdYQHjI (B/ s - (3eMeO YHOGdQMef YHOGdeLjO GdYHjOis; (3GdYHjOi (B, (3YHjOGddg Hf YHOGdcs; (3YHOGddg GdLHhQis ([(3djHjG(B] : s (3GdOGQ GdYQHjI ddcJGH , s, 1981)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdYUQ GdLGgdis; (3OhGhjf hbUGFOs