Jermy, A.C. <br/><br/>
The Phylogeny and classification of the ferns  A.C. Jermy, J.A. Crabbe andB.A. Thomas. 

 - London  Academic press  1973 
 - xiv, 28p., 26cm. 
<br/><br/><label>ISBN: </label>012-3850509. 
<br/><br/><label>Dewey Class. No.: </label>587.31012,  / J44T