1. Modern Britain, 1700–1983;Alderman,1987
2. Fourth North Sea Conf. Secretariat, marine and waste water division;Andersen,1995
3. Fourth Int. Conf. on the Protection of the North Sea. Progress Report;Andersen,1995
4. The illustrated history of Leeds;Burt,1994
5. The biology of the Tweed;Clayton;Sci. Total Environ.,1997