@inbook{52cfc547368c40b6b030b5848e7c8dff,
title = "Copper and Zinc in feed (additives): an essential burden?",
keywords = "Cattle, Copper, Feed additives, Soil quality, Surface water, Zinc",
author = "P.F.A.M. Romkens and S.W. Moolenaar and J.E. Groenenberg and L.T.C. Bonten and {de Vries}, W.",
year = "2008",
language = "English",
isbn = "9789086860616",
pages = "115--136",
editor = "P. Schlegel and S. Durosoy and A.W. Jongbloed",
booktitle = "Trace elements in animal production systems",
publisher = "Wageningen Academic Publishers",
}