W. J. Koops

An analysis to improve the use of fossil energy in the Dutch Poultry Industry.

R. P. Kwakkel, I.J.M. de Boer, I. Vermeij, 1998 .

Assessment of Sustainable Development

Murray Grossman, Jan van den Berg, W. J. Koops, 2000 .

Multiphasic analysis of lactation curves in dairy cattle.

W. J. Koops, M. Grossman, M. Grossman, 1988 .