By Chambers
By Michael Munro
By Lexus
By Ruth Blackie, etc.
By Harrap's Publishing
By Amy L. Brown, Carolyn Dermott
By Maurice J. C. Vile
By Maurice Walsh
By Mackenzie, John P.S.
By John O. E. Clark, William Hemsley
By Robert Leach
By Hugh Ross Williamson
By Elaine Higgleton, Catherine Schwarz
By Ebenezer Cobham Brewer, Adrian Room
By Joseph Freiherr Von Eichendorff
By Geoff Rolls
By Scottish Mathematics Group
By A.M. Macdonald