(3GdELgGV Hjf Gdabg hGdWH hGdbGfhf (B/s - (3GdSHGYj, eMeO Sja GdOjfs ((3OeTb ;s (3HjQhJ (B:s (3OGQ GdcJH GdYQHjI,s, 1977)
Keywords: (3GdELgGV (B((3abg ESdGej(B)s