Yazar
Paul L G Vlek
8 cilt bulundu.
Paul L. G. Vlek · Distributors for the U.S. and Canada, Kluwer Academic Publishers
362 sayfa · 1986
Nitrogen fertilizers / Congresses / Phosphatic fertilizers
Paul L. G. Vlek · Distributors for the U.S. and Canada, Kluwer Academic Publishers
260 sayfa · 1985
Tropical crops / Nutrition / Trace elements in plant nutrition / Deficiency diseases in plants / Food crops
Paul L. G. Vlek · Springer
284 sayfa · 2003
Greenhouse gas mitigation / Agriculture / Congresses / Agriculture, environmental aspects / Agriculture, economic aspects
Christopher Martius, H. Tiessen, Paul L. G. Vlek · Springer
321 sayfa · 2000
Congresses / Soil management / Humus / Control / Propagation
Ademola K. Braimoh, Paul L. G. Vlek · Springer
180 sayfa · 2008
Soil degradation / Land use / Management / Government policy / Soil management
Richard A. Sikora, E. R. Terry, Paul L. G. Vlek, Joyce Chitja · Taylor & Francis Group
324 sayfa · 2019
Agriculture / Agricultural innovations / Sustainable agriculture / Food security / Innovations
Christopher Martius, Holm Tiessen, Paul L. G. Vlek · Springer London, Limited
236 sayfa · 2011
Humus / Soil management