By Pearce, Malcolm L., Stewart, Geoffrey
By Sauvain, Philip, Rowe, Eric
By Sarah Kozloff
By Various Authors, Cambridge International Examinations
By McDonald, H.Simmons-, etc.
By Pedretti, Mara, Stephenson, Helen, Cook, Rolf
By Morgan, Dian, Patton, Mark
By Wilson, Neil
By Taylor Downing
By John David Rhodes
By Harrold, Jenni
By Burgess, Chris, Isseyegh, Anne
By Wright, Walter D.
By Watson, Jack B.
By Advanced Physics Project for Independent Learning
By Schofield & Sims, T R Goddard, J W Adams, R P Beaumont
By Case, S.L., Hall, David John
By Ridgway, Bill
By Merttens, Ruth, Ruth Merttens, Dave Kirkby
By Merttens, Ruth, Ruth Merttens
By Anon
By Ridout, Ronald, Adamson, George
By Ridout, Ronald
By Acklam, Richard, Crace, Araminta, Burgess, Sally