http://kannikar.net/Society/u31-%E0%B9%80%E0%B8%82%E0%B9%89%E0%B8%B2%E0%B8%AA%E0%B8%B9%E0%B9%88%E0%B8%A3%E0%B8%B0%E0%B8%9A%E0%B8%9A-4/ u31 เข้าสู่ระบบ https://speakerdeck.com/owennava1 Fri, 08 Aug 2025 10:39:32 EDT en