By Gordon, S.
By John Keighley, Stephen Doyle
By Duncan, George
By Appleby, David, etc., Charters, Jan, Foster, Jonathan, et al
By Deloughry, Mr Will, Fullick, Ann, Mr Patrick, Hiscock, Mr Mike, Jones, MR Peter, Naylor, Mr Phil, Stirrup, Mr Martin
By Bryant-Mole, Karen
By CGP Books, CGP Books
By Aird, Edwin G.A.
By S., Webb;
By Pickering, H.S.
By Nuffield Advanced Science Project
By Miller Jr., G.
By Jones, C. W.
By Micvhael Shepherd, Shepherd, Michael
By Taylor, Kim, Taylor, Kim
By Stringer, John
By Pluckrose, Henry, Fairclough, Chris
By Anne Rooney
By Clark, Ronald W.
By West Sussex Science 5-14 Scheme
By Punnett, Neil
By CGP Books
By Pople, Stephen
By Hutchings, Robert
By Breithaupt, Jim
By Sang, David, Jones, Graham
By Dolling, Bill, CGP Books, Gannon, Paddy