"Report of work carried out by the British Trust for Ornithology under contract to the Countryside Council for Wales and the Sea Empress Environmental Evaluation Committee"
The abundance and distribution of waterfowl within Milford Haven after the Sea Empress oil spill : year 1 report, September 1997 by M. J. S. Armitage. ISBN 0903793873. Published by British Trust for Ornithology in 1997. Publication and catalogue information, links to buy online and reader comments.