Alston, A. H. G. (Arthur Hugh Garfit) <br/><br/>
The ferns and fern-allies of west tropical Africa; being a supplement to the second edition of the Flora of west tropical Africa 

 - London  Crown Agents for Oversea Governments and Administrations  1959 
 - vii, 89 p.  il.; 26 cm. 
<br/><br/> Incluye índice  Suplemento a la segunda edición de: Flora of west tropical Africa by J. Hutchinson and J. M. Daziel, revised by R. W. J. Keay 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PTERIDOPHYTA<br/>AFRICA<br/>FLORA<br/>HELECHOS<br/>TAXONOMIA