Exploratory report 1,3-butadiene / W. Slooff ... [et al.]Exploratory report chlorotoluenes / W. Slooff ... [et al.]Exploratory report chloronitrobenzenes / W. Slooff ... [et al.]Exploratory report fluorescent whitening agents (FWAs) / E.J. van de Plassche, P.F.H. Bont, and J.M. HesseExploratory report parathion / J.M. Hesse ... [et al.]