Effect of sub-lethal concentrations of aluminium on the filtration activity of the freshwater mussel Anodonta cygnea L. at neutral pH / Enikő Kádár [et al.] Bibliogr.: p. 492-493. - Abstr. eng. In: Acta Biologica Hungarica. - ISSN 0236-5383. - 2002. 53. évf. 4. sz., p. 485-493. : ill.