Colonization and Plantation Management of Daito Islands 論文 Akitoshi Hiraoka ·1977-01-01 ·『Japanese Journal of Human Geography』 29(3) pp. 227-252 doi:10.4200/jjhg1948.29.227
Linguistics and language policies in North Korea 論文 Chin-Wu Kim ·1978-01-01 ·『Korean studies』 2(1) pp. 159-175 doi:10.1353/ks.1978.0002