Index herbariorum / 
general editor , F. A. Stafleu. 
 - 7th ed. compiled by Patricia K. Holmgren, Wil Keuken and Eileen K. Schofield. 
 - Scheltema & Holkema, Utrecht :  John,  1981. 
 - v. ;  25 cm. 
<br/><br/>/g v.1  Herbaria of the world. 
<br/><br/><label>ISBN: </label>9031304786 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Herbaria--Indexes.