Hassan SA, Bigler F, Bogenschütz H, Boller E, Brun J, Calis JM, Coremans-Pelseneer J, Duso C, Grove A, Heimbach U, Helyer N, Hokkanen H, Lewis G, Mansour F, Moreth L

Results of the sixth joint pesticide testing programme of the IOBC/WPRS-Working group 'Pesticides and Beneficial Organisms'.