Levitan, Lois. <br/><br/>
Improve your gardening with backyard research / 
Lois Levitan. 
 - Emmaus :  Rodale,  1980. 
 - xiv, 256 p. ;  23 cm. 
<br/><br/>Includes bibliography. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0878573062 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gardening--Experiments.<br/>Gardening--Research.