Chikuzen Suku shizen iseki no kenkyū - Shimada, Sadahiko (Tōkō Shoin, 1930)
Suku Okamoto hakken no kokyō ni tsuite Umehara Sueji cho: p.79-115. - Furoku: Chikuzen no Kuni Ido-gun Mikumo-mura koki zusetsu / Aoyagi Tanenobu cho. - English title on added t.p.: Studies on the prehistoric site of Okamoto, Suku in the province of Chikuzen. - Preface, table of contents, list of plates, illustrations, and summary also in English
Includes bibliographical references