延安市苹果政策性农业保险高低风险区划分 / Division of High and Low Risk Areas of Apple Policy Agricultural Insurance in Yan'an City
- Resource Type
- Academic Journal
- Source
- 农业工程 / AGRICULTURAL ENGINEERING. 12(11):80-83
- Subject
延安市 苹果 农业保险 风险区划分 - Language
- Chinese
- ISSN
- 2095-1795