Hyde, Harold Augustus <br/><br/>
Welsh ferus clubmosses qillworts, and horsetail: a descriptive handbook 

 - Cardiff  National Museum of Wales  1969 
 - , xii, 178p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ferns
<br/><br/><label>LC Class. No.: </label>QK527.H9