By Child, Lois Elizabeth, Wade, Paul Maxwell
By Horst, R. Kenneth
By Jones, D. Gareth
By Wakil, Waqas, Romeno Faleiro, Jose, Miller, Thomas A.
By Carrillo, Daniel, de Moraes, Gilberto José, Pena, Jorge E.
By Khan, Md. Aslam, Ahmad, Wasim
By Hill, Dennis S.
By Watterson, Andrew
By Dent, David
By Mr John Beardshaw, Mr Dave Brewster, Mr Paul Cormack, A. Ross, Beardshaw, Mr John, Brewster, Mr Dave, Cormack, Mr Paul, Ross, A.
By Pesticide Action Network UK
By Bull, David
By Shepherd, Allan, Gallant, Suzanne
By Matthews, G. A.
By Halstead, Andrew, Greenwood, Pippa
By Nadine B Carozzi
By Youdeowei, Anthony, Service, M. W.
By Kiss, Agnes, Meerman, Frans
By Wareham, Anne
By Halstead, Andrew, Brooks, Audrey
By David Squire
By J Taylor, Janet Taylor
By Roth, Sally, Dourado, Anna
By Nicholls, Jeff
By Green, Maurice Berkeley, etc.
By Hurrion, David
By Whitehead, R.