By George Boolos, Richard C. Jeffrey, Boolos, George, Jeffrey, Richard C.
By Ivor & Martin Harrop (edits). Crewe
By Glendinning, Eric H., Holmstrom, Beverly
By Susan Owens, Peter L. Owens, Owens, Susan, Peter L.
By School Mathematics Project
By JACT
By Angela Hildyard
By J. M. Spivey
By R. J. Vincent, Vincent, R. J.
By Linda Allison, David Katz
By John Ziman
By Veronica Clark, Clark, Veronica
By Adrian Doff, Doff, Adrian
By Snape, Scott, Heather
By Stephen Bell, Peter Brown, Steven Buckley, Bell, Stephen, Brown, Peter, Buckley, Steven
By Roland Soper, David Sparks, Soper, Roland, Sparks, David
By Spulber, Daniel F.
By Bell, David E.
By Robert Layton
By Wes Magee
By Roy Edwards, Mary Edwards, Alan Ward
By Judith Baxter, Baxter, Judith
By Colin Goldsmith, David Nelson, School Mathematics Project
By Brian Bolt, Bolt, Brian
By Jeffrey Wood, Lynn Wood
By Rob Childs
By Paula Bartley, Cathy Loxton