Potassium in the agricultural systems of the humid tropics  Proceedings of the 19th colloquium of the international potash institute held in bangkok 

 - Bangkok  International potash institute  1985 
 - 405p.  23cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers,soil conditioners,growth regulators<br/>Agriculture and related technologies<br/>Specific techniques
<br/><br/><label>Dewey Class. No.: </label>631.8  / POT