TY - PROGRESS IN GEOGRAPHY A1 - SUN Caizhi, SONG Xianfang T1 - Total factor productivity of marine economy in China in the era of digital economy Y1 - 2022-02-28 00:00:00.0 JF - PROGRESS IN GEOGRAPHY JO - PROGRESS IN GEOGRAPHY SP - 1983 EP - 1998 VL - 40 IS - 12 UR - {https://www.progressingeography.com/EN/10.18306/dlkxjz.2021.12.001} N1 - 10.18306/dlkxjz.2021.12.001 ER -