International code of botanical nomenclature  adopted by the Eleventh International Botanical Congress Seattle, August 1969 
prepared and edited by F. A. Stafleu ... et al. 
 - Netherlands  Utrecht  1972 
 - 426 p. ; 25 cm. 
 - Regnum vegetabile  82 .
<br/><br/> English, French and German. 
<br/><br/>Bibliography: p. 394-397. 
<br/><br/><br/>engfreger 
<br/><br/><label>ISBN: </label>9060460669 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Nomenclature--Congresses