By McGough, Roger, Roger McGough
By Cruess, Richard L.
By Steinar Kvale
By Clouder, Christopher, Rawson, Martyn
By Steiner, Miriam
By Frans Carlgren
By Gilbert J. Childs
By Grell, Jane, Smith, Derrick
By Koepke, HERMANN, Darrell, J.
By Edmunds, Francis
By Dahlin, Bo
By Steiner, Rudolf, Adams, G., M.
By Steiner, Rudolf, Bamford, Christopher, Everett, Roland
By Steiner, Rudolf, LATHE, Robert, Whittaker, Nancy
By L.F. Edmunds
By Fiona Carnie (Education Consultant, UK)