Yazar
Maozheng You
2 cilt bulundu.
Cilt sonuçları
Nong ye zi yuan ping jia guan li yu li yong
Maozheng You · Yayınevi bilinmiyor
345 sayfa · 1998
Agricultural resources / Agriculture / Economic aspects
Hai He di ping yuan shui tu zi yuan yu nong ye fa zhan yan jiu
Maozheng You, Rongjin Huang · Xin hua shu dian Beijing fa xing suo fa xing
188 sayfa · 1991
Agriculture / Water-supply, Agricultural / Land capacity for agriculture