By Bostock, L, Shepherd, A, Chandler, F S, Smith, Ewart
By Merttens, Ruth, Ruth Merttens, Dave Kirkby
By Ridgway, Bill
By Kearsley Bullen, Rob, Edmondson, Andrew, Ward, Tony
By Merttens, Ruth, Ruth Merttens
By Richard Parsons, CGP Books
By School Mathematics Project
By SPMG, Scottish Primary Maths Group
By Robert Glen
By Author Team, Combined
By Handbury, Mike, Patmore, Mark, Jeskins, John, Matthews, Jean, Baxter, Howard
By Pledger, Keith, Kent, Mr David
By Baxter, Howard, Handbury, Michael, howard-baxter