
"Prepared by the National Expert Group on Transboundary Air Pollution (NEGTAP) at CEH Edinburgh on behalf of the UK Department for Environment, Food and Rural Affairs, Scottish Executive, The National Assembly for Wales/Cynulliad Cenedlaethol Cymru, Department of the Environment for Northern Ireland.".
"DEFRA Contract EPG 1/3/153".
Transboundary air pollution : acidification, eutrophication and ground-level ozone in the UK by National Expert Group on Transboundary Air Pollution. ISBN 1870393619. Published by DEFRA in 2001. Publication and catalogue information, links to buy online and reader comments.