(3GdeYdbI GdQGHYI (B/ s - (3Hf QHjYI, dHjOs ((3CHhXHj (B:s (3GdeLeY GdKbGaj,s, 1977)
(3GdcJGH HGddZI GdEfLdjRjIs
Keywords: (3GdTYQ GdYQHjs; (3GdYUQ GdLGgdjs