By Miles, Liz, Collins Big Cat
By Treagust, David Franklin, Duit, Reinders, Fraser, Barry J.
By Collins Easy Learning
By Clausen-May, Tandi
By Milton, John, BROCKBANK, J.P., Patrides, C. A.
By Lynch, Michael
By John Murray Publishers, Pimentel, Ric, Wall, Terry
By Edwards, Roy, Clark, Jean, Dickson, Alice, Hewett, Barbara, White
By Dixon, Trevor, Solvemaths Ltd
By Lallaway, Marie, Barnes, Madeleine
By Rumsey, Deborah J.
By National Geographic Kids
By Sage, Alison, Collins Big Cat
By Cox, Marian, Lucantoni, Peter
By Budgell, Gill
By Llewellyn, Claire
By Mitton, Tony
By Rose, Gerald
By Mitton, Tony, Blundell
By Thomas, Isabel
By Citizenship Foundation, The, Thorpe, Tony
By Michelle Kay Compton (author) & Robin Chappele Thompson (author)
By Beech, Linda Ward
By Miller, Marcia, Lee Dr, Martin
By Priestley, Michael
By Scholastic
By Scholastic Inc.
By Priestly, Michael
By McKain, Neil, Orme, Robert
By Mugford, Simon, Collins Big Cat