"Report of work carried out by the British Trust for Ornithology in conjunction with the University of East Anglia under contract to Northumbrian Water Ltd."
Spiral bound.
Impacts of changes in sewage disposal on populations of waterbirds wintering on the Northumbrian coast report for 2003/04 by N. H. K. Burton. ISBN 9781906204679. Published by British Trust for Ornithology in 2009. Publication and catalogue information, links to buy online and reader comments.