退耕还林与青海省社会经济可持续发展退耕還林與青海省社會經濟可持續髮展 퇴경환림여청해성사회경제가지속발전 Removing crops from land to plant grasses and trees and the social and economic sustainable development in Qinghai
万方数据
陕西农业科学(农村经济版)陝西農業科學(農村經濟版)협서농업과학(농촌경제판) SHAANXI JOURNAL OF AGRICULTURAL SCIENCES(RURAL ECONOMY) 2000年10期22-23,共2页