Agricultural practice and water quality on farms registered for derogation. Results for 2007 in the derogation monitoring network
2009-05-28
http://www.rivm.nl/bibliotheek/rapporten/680717009.html
EU規制値を超えた量の家畜の堆肥を使うことが許された特区の肥料の使用の実際と水質に関する報告書。(硝酸)