By Ganeri, Anita
By Smith, C. A.
By Sherwood, Lauralee
By Barbetti, Yvette
By Heinemann, U.
By Glover, David M.
By Bauman Ph.D., Robert W.
By Jordan, C.C., Oehme, P.
By Raven, Peter H., Johnson, George B.
By Charles Darwin, Gillian Beer
By Bradley, PB
By Moira McPartlin
By Macqueen, Jean
By Greenaway, Theresa
By Pollard, William C. Earnshaw
By Martini, Frederic H., Ober, William C., Nath, Judi L.
By Harper, David R.
By Reid, Robert G. B.
By Hoey, T.H.
By Hassall, June
By Freeland, P.W.
By NCCT
By Gillinder, Brian
By Miodownik, Mark
By Gibbs, Brian Michael, etc.
By Pheby, John
By Bowsher, David
By Elliott, J.M.