ü
(oligopoly) ?
(oligopoly) ? 庮 ݰ ġϴ. Ϲ īں ӷ ϴ. Ͽ Ѱ . ȭ ٸ ǻ ȴ. Ϲ ̷ 忡 ݰ 귮 ̴. ؼ 庮 ̸, Ͽ ǿ Żϰ ִ . 忡 Ͽ ǻ ȴ.