Sustainable development strategies in less favoured and marginal production areas (mountains)R P Yadav,N S Jodha,Jodha N S Gregersen H M Oram P Spears Jmag(1990)引用 23|浏览0暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要