Productionoftilapias has a wide distribution, and 72 percent are raised in Asia (particularlyin China and SoutheastAsia), 19 percent in Africa, and 9 percent in America. fao.org fao.org 罗非鱼产量广泛分 布,有72%在亚洲养殖(
Since the concept of sustainable development was put forward, theoretical research and case studies on sustainability have been abundant. In 2001, the scientific concepts of sustainability proposed by 23 scholars systematically covered the important roles of the four major capitals, which marked the evol...
We investigate the relationship between the presence of migrants and housing values in the neighbourhoods of Italian provincial capitals against a backdrop of: (a) the intense immigration of last decades; (b) the uneven spatial distribution of migrants between and within municipalities; (c) an ...