Nutrient balances and the need for fertilizers in semi-arid and arid regions  : proceedings of the 17th Coloquium 

 - Bern :  The Institute,  1983 
 - 394 p.  : ilus. ; gráfs 
<br/><br/><label>LCCN: </label>25259 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizantes.<br/>Plantas--Nutrición.<br/>Suelos y nutrición.<br/>Suelos--Regiones áridas.
<br/><br/><label>Dewey Class. No.: </label>631.8  / I54