著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL Commission of the European Communities. Directorate-General for Agriculture,Intensive farming and the impact on the environment and the rural economy of restrictions on the use of chemical and animal fertilizers ; study prepared for the Directorate General for Agriculture,,Office for Official Publications of the European Communities,1989,"Deadline 92, a frontier-free Europe",,9282601234,,https://cir.nii.ac.jp/crid/1130282271799685632