Sim, Thomas Robertson. <br/><br/>
The ferns of South Africa :   containing ferns descriptions and fig ures of frens and fern allies of South Africa /  
by Thomas R. Sim. 
 - 2nd ed. 
 - Cambridge :   University Press,   1915. 
 - ix, 384 p. :    ill., plates  ;    23 cm . 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ferns ----South Africa.----
<br/><br/><label>Dewey Class. No.: </label>587.310968