F Donker Duyvis his life and work 
/ Institute of Documentation and Filing 
 - Hague:   Institute of Documentation and Filing,   1964 
 - 80p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography
<br/><br/><label>Subjects--Index Terms: </label>Science 
<br/><br/><label>Universal Decimal Class. No.: </label>R 92:002DD  / K4