The Tianshui Experimental Site of Soil and Water Conservation was set up in 1942.Then the first construction publicized the thinking of soil and water conservat
In this paper,we use DEA-Tobit model to conduct empirical study on the governmental supply efficiency of public service in Chongqing’s 38 counties and the infl
The study aims to promote the off-season cut roses industry in Hainan Province to the whole island and even whole China. Based on the production data in latest
With the methods of qualitative analysis, induction and deduction, modes of key links in increase and decrease connection of urban and rural construction land a