Douglas, J. Sholto <br/><br/>
Hydroponics : Bengal Ststem 

 - Oxford  Oxford University Press  1951 
 - xii, 147p. plts 
<br/><br/><label>Subjects--Topical Terms: </label><br/>J9s
<br/><br/><label>Dewey Class. No.: </label>J9s  / I1