Hyde Harold Augustus <br/><br/>
Welsh ferns, clubmosses, quillworts, and horsetails :   a descriptive handbook/ 
H. A. Hyde and A. E. Wade. 
 - 5th ed., rev., expanded, and rearranged 
 - Cardiff :  National Museum of Wales,  1969. 
 - xii, 178 p., 14 p. of plates :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references (p. 164-166) and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ferns--Wales<br/>Pteridophyta--Wales
<br/><br/><label>LC Class. No.: </label>QK527  
<br/><br/><label>Dewey Class. No.: </label>587.09429