Hilyer, Charlotte Isabel,  Mrs. <br/><br/>
Hydroponics;  food without soil. A journal of experiments 1938 to 1940, 
by C. Isabel Hilyer. 
 - Harmondsworth, Middlesex, Eng.,  New York,  Penguin books limited  [1940] 
 - 116 p.  illus., port.  18 cm. 
<br/><br/><label>LCCN: </label>agr41000458  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydroponics.
<br/><br/><label>LC Class. No.: </label>SB139  / .H5