Text ( visual ) : unmediated Quality of surface fresh water : common procedure for the exchange of information 1993-95 : synthesis report / European Commission, Directorate-General XI: Environment, Nuclear Safety and Civil Protection. -- Luxembourg : Office for Official Publications of the European Communities , c2000. -- 1 v. (various pagings) : ill.(some col.) ; 30 cm. -- "CR-20-99-599-EN-C". -- ISBN 9282861252 ; (BA46005006) ; https://ci.nii.ac.jp/ncid/BA46005006 Author Heading(s): Commission of the European Communities ; Commission of the European Communities. Directorate-General Environment, Nuclear Safety and Civil Protection