Index herbariorum / 
edited by Frans A. Stafleu. 
 - Scheltema & Holkema, Utrecht :  Bohn,  1983. 
 - 803 p. ;  25 cm. 
 - Regnum vegetabile  vol. 106, 109. .
<br/><br/> Part II (5) Collectors N-R by I. Hettie Vegter. 
<br/><br/><label>ISBN: </label>9031305855 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Herbaria--Directories.