华北高产粮区基于环境保护的农产品安全生产服务体系现状及改进建议——以山东桓台县为例
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1005-9121|38|1|1-6
ISSN: 1005-9121
Source: 中国农业资源与区划, Vol.38, Iss.1, 2017-01, pp. : 1-6
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Abstract