Johns, Robert J. <br/><br/>
Holttum memorial volume 

 - 272 páginas  24 x 16 cm 
<br/><br/> Published to commemorate the centenary of the birth of professor R. E. Holttum 1895 - 1995 
<br/><br/><label>ISBN: </label>1-900347-17-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ophioglossum<br/>Helechos<br/>Pteridophyta<br/>Taxonomía<br/>Esporas