Ijima, Isao,  1861-1921 <br/><br/>
The hexactinellida of the Siboga expedition / 
by Isao Ijima. 
 - Leiden :  E. J. Brill,  1926. 
 - 383 p. :  ill., plates ;  33 cm. 
 - Siboga-expeditie ;  VI. .
 - Siboga-expeditie ;  VI. .
<br/><br/> Added title page: Sibago-Expeditie. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hexactinellida.