Growing plants without soil (Vermiculaponics) /  
Maxwell Bentley 
 - Johannesburg :    Hydro-chemical industries,    1955 
 - 212 p. :    front. ill. (part .col.) ;    28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Vermiculite<br/> Growth (Plants)<br/> Hydroponics
<br/><br/><label>Dewey Class. No.: </label>Q 631.58  BEN