农学 >>> 农学总论 >>> 农学其他学科 >>>
搜索结果: 1-3 共查到农学其他学科 Poland相关记录3条 . 查询时间(0.116 秒)
Knowledge and know-how are the most important factors in many branches of the national economy. The same rules apply to organic agriculture. This was investigated in the Podkarpackie region in Pol...
Organic farming is developing dynamically in the European Union. In Poland its growth is much slower: the area of organic farms is still just a little above 1% of all utilised agricultural area. Resea...
The presence of blood serum antibodies to Coxiella burnetii phase I antigen, indicative of chronic Q fever or convalescence, was found by indirect immuno-fluorescent test in 16 out of 90 examined farm...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...