Yazar
h van keulen
6 cilt bulundu.
Cilt sonuçları
Science For Agriculture And Rural Development In Lowincome Countries
H. van Keulen · Springer
248 sayfa · 2007
Development economics / Ecology / Agriculture / Environmental sciences / Geography
Economic policy and sustainable land use
Nico Heerink, H. van Keulen, Marijke Kuiper · Physica-Verlag Heidelberg
376 sayfa · 2001
Econometric models / Sustainable agriculture / Congresses / Economic policy / Land use
Crop response to the supply of macronutrients
H. van Keulen · Center Agricultural Pub & Document
46 sayfa · 1982
Effect of nitrogen on Plants / Effect of phosphorus on Plants / Effect of potassium on Plants / Fertilizers / Agricultural chemicals
Simulation of water use and herbage growth in arid regions
H. van Keulen · Centre for Agricultural Pub. and Documentation
175 sayfa · 1975
Arid regions agriculture / Crops and water / Data processing / Mathematical models / Cultures et eau