.(3eYLe GdfHGJs (3GfcdjRj,aQfSj,YQHjs - .((3GdefXeI GdYQHjI ddJQHjI hGdKbGaI hGdYdhe (B((3GdQHGW, GdeZQHs ((3GdQHGWs (3GdefXeIs, 1971)
Keywords: (3GdfHGJ, Ydes -- (3eYGLes