by Leadbitter N.J, Steck B, Frank L.R, Leadbeatter A.J
Year of Publication 1994

by Leadbitter, N.J, Nyfeler, R, Elmsheuser, H. (Ciba-Geigy Limited, Basle (Switzerland))
Year of Publication 1994

by Bassi, A.B. Jr, Laird, D, Zang, L, Leadbitter, N.J. (Ciba-Geigy Corportion, Plant Protection Division, PO Box 18300, Greensboro, North Carolina (USA))
Year of Publication 1994

by Kirk, W.W, Leadbitter, N.J. (Ciba Agriculture, Whittlesford, Cambridge, CB2 4QT (United Kingdom))
Year of Publication 1993