.(3eYLe GdLjhdhLjGs (3GfLdjRj, aQfSj, YQHjs - .((3GdefXeI GdYQHjI ddJQHjI hGdKbGaI hGdYdhe (B((3GdQHGW, GdeZQHs ((3GdQHGWs (3GdefXeIs, 1971)
Keywords: (3GdLjhdhLjGs -- (3eYGLes