刘永茂

Double-row buttons for drain valve

刘永茂, 2011 .

农户生计多样性弹性测度研究—以陕西省安康市为例@@@Measuring household livelihood diversification resilience：a case study in Ankang City of Shaanxi Province

刘永茂, L. Shuzhuo, 李树茁, 2017 .