General information and program 

 - (s.l. :  s.e.),  (s.a.) 
 - 219 p.  : ilus. 
<br/><br/><label>LCCN: </label>26808 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botánica--Congresos.
<br/><br/><label>Dewey Class. No.: </label>580.631  / C6p 1969