Grounds, Roger. <br/><br/>
Ferns / 
Roger Grounds. 
 - London :  Pelham Books,  1974. 
 - 264 p. : ill.  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ferns.<br/>Ferns--Identification.<br/>Ferns--Varieties.