Verdoorn,  <br/><br/>
Manual of Pteridology 

 - Thrissur  Hodderpaperbacks  1938 
 - 640p 
<br/><br/><label>Subjects--Uniform Titles: </label>--GENERAL STACK
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural sciences & mathematics--Physiology & related subjectsZoology--Life sciences; biology 
<br/><br/><label>Dewey Class. No.: </label>571.3  / VER-M