By Worcester, R.
By Schott, Ben
By Gareth Moore, Dermot Turing
By Bradford, Anne R.
By Barham, Andrea
By Connor, Alan
By Etter, D. M.
By Allen, Robert, etc., Carter, Philip, Russell, Ken
By Puzzler Media
By Doug Lennox
By Puzzler Media Ltd
By Arcturus Publishing
By Igloo Books
By Danesi Ph.D., Marcel
By Gower, David
By Allen, Robert
By Bodycombe, David J.
By Gardner, Martin
By Bill Murray
By Ursula Harringman
By Barton, John G.
By Lewis, John
By Pokémon
By Maslanka, Christopher, Tribe, Steve
By Chatten, Dave, Allen, Robert
By Gifford, Clive