By T. R. Oke
By Peet, Richard
By R. J. Johnston, John Charles Doornkamp
By Leclercq, Henri, Dillon, Daniel, Maureen Hornsey: illus. by Daniel Dillon, by
By Allan M. Findlay, Anne M. Findlay, Allan M Findlay (University of Dundee Dundee UK)
By Colls, Jeremy
By Schwela, Dietrich, Zali, Olivier
By Ehrlich, Paul R., Ehrlich, Anne H.
By Jill Bailey
By Louise Spilsbury
By Dury, G.H.
By Truran, H.C.
By Dove, Jane, Guiness, Paul, Nagle, Garrett, Martin, Chris, Witherick, Michael
By Foley, Gerald, Buren, E.A.Van
By P. F Jenkins
By Skuse, Allen
By Air & Waste Management Association