Mengel, Konrad. <br/><br/>
Principles of plant nutrition 

 - Bern :  International Potash Institute,  1978 
 - 593 p.  : ilus. ; gráfs. 
<br/><br/><label>LCCN: </label>40479 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plantas--Elementos minerales.<br/>Plantas--Nutrición.
<br/><br/><label>Dewey Class. No.: </label>581.13  / M4