De March, B. G. E.2014-11-242014-11-241986http://hdl.handle.net/1993/29022vii, 130 [i.e. 131] leaves :engModels for the joint effects of toxicants in aqueous mixtures : a study of the acute lethal response of the freshwater amphipod Gammarus lacustris to two-toxicant mixturesdoctoral thesis