Mason, John <br/><br/>
Commercial hydroponics / 
John Mason 
 - 172 p. :  il. ;  25 cm. 
<br/><br/><label>ISBN: </label>0864173008 
<br/><br/><label>Subjects--Topical Terms: </label><br/>HIDROPONIA
<br/><br/><label>Dewey Class. No.: </label>631.585  / M3 1990