TRENDS IN LANDFORM TRANSFORMATION STUDIES-A REVIEW 論文 Hiroshi Kadomura・Kazuhiko Takeuchi ·1983-01-01 ·『Geographical Review of Japan』 56(4) pp. 199-222 doi:10.4157/grj.56.199
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