By Smit, Tim
By Clare, Horatio
By David J. C. MacKay
By Pearce, David
By Brubaker, R. Douglas
By Struthers, John, Struthers, John
By Mcphail, Rodger, Alcock, Ian, Mcphail, Rodger
By Mech, L. David, Caras, Roger A., Phillips, Michael K.
By Prain, Gordon D., Fujisaka, Sam, Warren, D.Michael
By Capewell, Ian
By Gambell, Ray
By Molloy, Les, Cubitt, Gerald
By Stuart, Chris, Stuart, Tilde, Stuart, Chris, Stuart, Tilde
By Swan, Gerry
By Meadows, Donella H., Meadows, Dennis L., Randers, Jorgen, Tinbergen, Jan
By Gore, Al
By Barbier, Edward, Burgess, JoAnne, Folke, Carl
By Laird, Sarah A.
By Pepper, David
By Burton, Maurice, Assen, R.V., Assen, Rob Van, etc.
By Sterry, Paul
By McIntosh, Alastair
By Lucie-Smith, Edward
By Ernst von Weizsacker, Amory B. Lovins, L. Hunter Lovins
By Pearce, D.W.
By Goldemberg, Professor Jose
By Balouet, Jean Christophe
By Weizsacker, Ernst U. von, Lovins, Amory B., Lovins, L. Hunter
By Rietbergen-McCracken, Jennifer, Abaza, Hussein