By Lydiane Kyte, John Kleyn, John G. Kleyn
By Larson, Roy A.
By Martin, Hubert, Woodcock, David
By Sheldrake, Merlin
By Brightman, Frank H., Nicholson, B.E.
By Howe, Henry F., Westley, Lynn C.
By L. Boulos
By Sen
By Dr Shirley Sherwood
By Hobhouse, Henry
By Maurice S. McDonald (National University of Ireland, Galway)
By Denis J Murphy (, Head of Biotechnology Unit, Division of Biological Sciences, University of Glamorgan, UK)
By Jason Roberts
By Jonathan Drori, Lucille Clerc
By Florence Wilkinson
By Dr. Henry Oakeley
By Agriculture, Fish.& Food, Min.of
By Christopher Brickell
By Susan Purveur, Elizabeth Harbour
By Rudolf Slaba
By Toby Musgrave, Will Musgrave
By Beverley Glover (Professor of Plant Systematics and Evolution, Professor of Plant Systematics and Evolution, Department of Plant Sciences, University of Cambridge)
By J. Grace, etc.
By H. Griffiths, J.A.C. Smith
By J. Coombs, etc., D.O. Hall (Kings College, University of London), S.P. Long (University of Essex, Colchester), J.M.O. Scurlock (King's College
By M.Nabil El Hadidi
By Mark Holderness (CABI Bioscience, Egham, UK), D. McNamara (European and Mediterranean Plant Protection Organization (EPPO)), I. Smith (European and Mediterranean Plant Protection Organization (EPPO)), Peter Scott (CAB INTERNATIONAL)