Evaluation of enzyme biomarkers in freshwater invertebrates from Taro and Ticino river, ItalyE. Berra, M. Forcella, R. Giacchini, L. Marziali, B. Rossaro and P. ParentiAnn. Limnol. - Int. J. Lim., 40 3 (2004) 169-180DOI: https://doi.org/10.1051/limn/2004015