http://orgprints.org/13548/ Soil Nitrogen: research and extension These are the proceedings of the 4th QLIF workshiop with contributions of several European soil and nitrogen researchers. 4nutrient 5soil bolk Soil Nitrogen: research and extension 2008-06-10 van der Burgt, Ir. G.J.H.M and Timmermans, Dr. B.G.H. (Eds.) (2008) Soil Nitrogen: research and extension. Proceedings of 4th QLIF workshop, Driebergen, the Netherlands, 13-15 February 2008. van der Burgt, Ir. G.J.H.M Timmermans, Dr. B.G.H. application/pdf