Ujiié, Hiroshi <br/><br/>
The Poronai foraminifera of the northern Ishikari coal-field, Hokkaido 

 - Tokyo  Geographical Institute and Geological and Mineralogical Institute, Tokyo University of Education  March 1960 
 - pp. 117-133  láms. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>FORAMINIFERA<br/>MICROPALEONTOLOGIA<br/>TERCIARIO
<br/><br/><label>Subjects--Geographic Terms: </label><br/>JAPON