Douglas, James Sholto. <br/><br/>
Advanced Guide To Hydroponics: Soilless Cultivation 
Douglas, James Sholto. 
 - London  Pelham Books  1976 
<br/><br/><label>ISBN: </label>0720715717 
<br/><br/><label>LC Class. No.: </label>SB-425.F56-1976