Progress and future plans of the project "Management of nitrogen in acid low activity clay soils in the humid tropics for food crop production" / by B.T. Kang, A.C.B.M. van der Kruijs en J. van der Heide

Progress and future plans of the project "Management of nitrogen in acid low activity clay soils in the humid tropics for food crop production" / by B.T. Kang, A.C.B.M. van der Kruijs en J. van der Heide