Thomas, Graham Stuart. <br/><br/>
Plants for ground-cover / 
written and illustrated by Graham Stuart Thomas. 
 - Portland, Or. :  Sagapress/Timber Press,  1990, c1970. 
 - xxv, 283 p. :  ill. 
<br/><br/> Reprint. Originally published: London : Dent, 1970. With further revisions. 
<br/><br/><label>ISBN: </label>0881921696 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ground cover plants.<br/>Shrubs.<br/>Ferns.