1 Xu, Yuhu. Ming dai Zheng He hang hai tu zhi yan jiu / Xu Yuhu zhu Taibei : 1976 Taiwan xue sheng shu ju 2, 1, 176 p. : Title on p. [4] of cover: Research on the [sic] Cheng Hoʻs [navigation drawing] in [the] Ming dynasty. Includes bibliographies.