(3GdCOHc aj GdGbJUGO GdYGdej (B/s - (3GfOLjcjGf, Q(B.(3hs ((3HjQhJ (B:s (3OGQ GdeSJbHd GdYQHj ,s, 1985)
Keywords: (3GdCOHc s; (3GdYGdej s