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Yinjun Chen
2 cilt bulundu.
Cilt sonuçları
She hui fa zhan ke ji zhan lüe yan jiu
Yinjun Chen · Zhongguo nong ye ke xue ji shu chu ban she
356 sayfa · 2007
Economic policy / Natural resources / Management . / Economic development / Technological innovations
Xi bu nong cun ke ji chuan bo yu pu ji ti xi yan jiu
Yinjun Chen, Ruizhen Yang · Jing xiao Xin hua shu dian Beijing fa xing suo
227 sayfa · 2004
Agricultural innovations / Communication in agriculture