TY - BOOK AU - Tunsjø, Øystein TI - The return of bipolarity in world politics : China, the United States, and geostructural realism PB - Columbia University Press PY - 2018 EP - ix, 271 p. UR - https://ci.nii.ac.jp/ncid/BB28095037 SN - 9780231176545 ER -