By Remarque E.J.   de Jong J.M.A.   van der Klis R.J.   Masurel N.   Ligthart G.J.   in Experimental Gerontology

ISSN:0531-5565|34|1|109-115

Elsevier‎(1999)‎

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By Snyman H.G.   de Jong J.M.   Aveling T.A.S.   in Water Science and Technology

ISSN:0273-1223|38|2|87-95

Elsevier‎(1998)‎

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