Mineral resource information in support of national, regional and local planning : Merseyside (comprising City of Liverpool and Boroughs of Knowlsey, Sefton, St. Helens and Wirral): British Geological Survey report CR/05/129N / D.J. Minchin, F.M. McEvoy, D.J. Harrison, D.G. Cameron, D.J. Evans, G.K. Lott, S.F. Hobbs and D.E. HighleyBooks/Monographs
