By van der Heij, M.R.H. Loewik, Th. Ockhuizen
By Christine Miller, Fiona Angus
By John Clare
By D. Lyon, etc.
By Alfonso Gambardella (Universita degli Studi di Urbino, Italy)
By L. Ciravegna
By H. Miyoshi, M. Kii
By M. Kawakami, T. J. Sturgeon
By Wilson J. Warren
By Dr. Tony Hines, Margaret Bruce
By Craig Donnellan
By Bill Hylton, Organic Farming Gardening Magazine
By Benjamin S. Blanchard, Wolter J. Fabrycky
By Jim McLauchlin, Christine Little, Betty C. Hobbs
By Seiichi Nakajima, Kentaro Nakamura
By Andrew Rugasira
By Tansy E. Hoskins
By Albert Padwa, William H. Pearson
By Bob Ricketts
By Peter Childs, BSc.(Hons), D.phil, C.Eng, F.I.Mech.E., FASME, FRSA (Professorial Lead in Engineering Design, Co-Director Energy Futures Lab, IMPERIAL COLLEGE LONDON, UK)
By Chris Haddon
By Tyler Colman
By E.B. Jackson
By John Reynolds
By Roger D. Thomas
By Barbara Graham, Caline Anouti
By Shawn Brecka
By William Alexander Lincoln
By Hamilton-Paterson, James