Transformation of land scale management in major grain-producing areas and countermeasures——A case study of Hebei Province
QIN Yanjie, ZHAO Yanxia, LIU Xin, WU Aibin, SHEN Huitao, YANG Huijuan
Science & Technology Review . 2020, (13): 65 -72 .  DOI: 10.3981/j.issn.1000-7857.2020.13.008

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