By Steve Parker, Parker, Steve
By Mike Unwin
By Victoria Parker
By Steve Parker
By Oliver Gillie
By Neil Morris
By Hazel King
By A.G. Clegg, P.Catherine Clegg, Clegg, A.G., P.Catherine
By Victor Dubowitz
By Alan W. Grogono, T. H. Howells, et al
By Bernard Lennox, Lennox, Bernard
By James D. Watson
By Cotterill, Rodney
By Derrik Mercer, etc.
By John L. Burbridge
By John O. Bird, A. J. C. May
By Bill Boyle, Boyle, Bill
By Combined Author Team
By Scottish Primary Mathematics Group
By Scottish Primary Maths Group SPMG, SPMG, Scottish Primary Maths Group