http://orgprints.org/13548/ Soil Nitrogen: research and extension Nutrient turnover Soil These are the proceedings of the 4th QLIF workshiop with contributions of several European soil and nitrogen researchers. van der Burgt, Ir. G.J.H.M Timmermans, Dr. B.G.H. 2008 Proceedings NonPeerReviewed application/pdf http://orgprints.org/13548/1/QLIF_2008__Nitrogen.pdf 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. http://orgprints.org/13548/http://orgprints.org/13548/1/