By Clayton, G.B.
By Hollingworth, P.
By The BIOTOL Project
By Plessis, D.J.Du
By Hickling, P., Golding, J.R.
By Harper, Peter S.
By Stevens, R.F.
By Hickman, Ian
By French, Herbert, Hart, F.Dudley
By Parrish, A.
By Open University
By Green, Kenneth, Morphet, Clive
By Higgins, Raymond A.
By Knight, S.A.
By Wareing, P.F., Phillips, I.D.J.
By Enoch, M.D., etc., Trethowan, Sir William
By Kantorowicz, George F.
By Foster, R.W.
By Rollason, E.C.
By Dinan, Timothy G.
By Drucker, Peter Ferdinand
By Bramer, Brian, Susan
By Bird, John O., May, A. J. C.
By Hector, Winifred, Fairley, G.Hamilton, Malpas, J.S.
By Fairpo, Jenifer E.H., C.Gavin
By French, Sally
By Clarke, Harold Caesar
By Goodworth, Clive T.
By HENSON, David B.
By Bennett, Arthur G., Rabbetts, Ronald B.