搜索结果: 1-2 共查到“人口学 available K”相关记录2条 . 查询时间(0.078 秒)
Census of Agriculture Data Now Available at Watershed Level
Census Agriculture Data Watershed Level NASS
2009/6/3
WASHINGTON, May 29, 2009 - For the first time, results from the Census of Agriculture have been published at the watershed level by the U.S. Department of Agriculture's National Agricultural Statistic...
Family policies in Europe：available databases and initial comparisons
Family policies initial comparisons available databases
2009/3/10
Population trends in recent years have prompted most European countries to introduce or expand family support policies. In particular, the decline in fertility since the 1970s might be harmful in the ...
