Exell, A. W. (Arthur Wallis), 1901- <br/><br/>
Supplement to the catalogue of the vascular plants of S. Tomé (with Principe and Annobon)  

 - London  Printed by order of the Trustees of the British Museum  1956 
 - 58 p.  il.; 25 cm. 
<br/><br/> \"British Museum (Natural History) (portada)\"  Incluye: índice 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SAO TOME<br/>PRINCIPE<br/>ANNOBON<br/>PLANTAS VASCULARES<br/>SUDAFRICA<br/>FLORA<br/>CATALOGO