Paul L. G. Vlek

Land use and soil resources

Year unknown Ademola K. Braimoh and Paul L. G. Vlek

Management of Nitrogen and Phosphorus Fertilizers in Sub-Saharan Africa

Year unknown

Managing organic matter in tropical soils

Year unknown Christopher Martius, H. Tiessen, and Paul L. G. Vlek

Managing Organic Matter in Tropic...

Managing Organic Matter in Tropical Soils - Scope and Limitations

Year unknown Christopher Martius, Holm Tiessen, and Paul L. G. Vlek

Micronutrients in Tropical Food Crop Production

Year unknown

Transforming Agriculture in South...

Transforming Agriculture in Southern Africa

Year unknown Richard A. Sikora, E. R. Terry, Paul L. G. Vlek, and Joyce Chitja

Tropical agriculture in transition-- opportunities for mitigating greenhouse gas emissions?

Year unknown