Proceedings. 

 - Wageningen :  International Working Group on Soiless Culture,  1977. 
 - 394 p. :  : ilus. Gráfs. 
<br/><br/><label>LCCN: </label>26814 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hidroponía.<br/>Hidroponia--Congresos.
<br/><br/><label>Dewey Class. No.: </label>631.585  / C6 1976