@techreport{weko_21003_1,
   author	 = "酒井博敬",
   title	 = "データ・ディクショナリ／ディレクトリ（DD/D）の動向",
   year 	 = "1976",
   institution	 = "日立製作所",
   number	 = "41(1975-DBS-027)",
   month	 = "mar"
}