By School Mathematics Project
By Daniel J. Velleman, Velleman, Daniel J.
By Quadling, Douglas, Neill, Hugh, Douglas Quadling
By Neill, Hugh, Quadling, Douglas, Quadling, Douglas
By Quadling, Douglas, Neill, Hugh, Douglas Quadling, Hugh Neill
By Douglas Quadling, Hugh Neill
By Harrison, Paul, Mumford, Jeanette
By Carolyn Collins Petersen, John C. Brandt
By Bolt, Brian
By Westfall, Richard
By Secada, Walter G., Fennema, Elizabeth, Adajian, Lisa Byrd
By Clarke
By Phillips, Richard
By R. P. Burn