Howard, Richard A., comp. <br/><br/>
International directory of botanical gardens 

 - Utrecht  International Bureau for Plant Taxonomy and Nomenclature  1963 
 - 118 p.   24 cm. 
 - Regnum vegetabile  .
<br/><br/> Incluye índice analítico. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>JARDINES BOTANICOS<br/>DIRECTORIOS