@techreport{weko_20938_1,
   author	 = "森田勝弘",
   title	 = "データベース管理システムModel 204について",
   year 	 = "1979",
   institution	 = "三井情報開発株式会社営業情報部",
   number	 = "29(1979-DBS-016)",
   month	 = "nov"
}