English: A CONTRIBUTION TO THE STUDY ON THE PLANKTON AND THE ALLIED PROTOZOA IN THE NORTHERN WATERS OF JAPAN I. : A List of the Littoral Foraminifera of Hokkaido
Japanese: 北部日本に於ける浮遊生物竝びに其他の原生動物に就て 1 : 北海道沿岸の有孔蟲目録