NLM Digital Collections

Tuan ti fang lao, shou xian yao gai shan gong zuo ren yuan de sheng huo he gong zuo tiao jian, bing zhu yi wei sheng jiao yu, huan jing wei sheng he ti ge duan lian, pu bian de fei bu jian cha, ke yi jiang suo you de fei jie he bing ren zhao chu lai, gei yi zhi liao he ge li, bao zhang qi ta ren de jian kang