Morikawa, Hiroshi, and Kenji Kitagawa. “Hiroshima - Wandlungen Der Inneren Struktur Und Region”. ERDKUNDE 17, no. 1/2 (July 31, 1963): 100–108. Accessed December 4, 2024. https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/1407.