GSTDTAP

浏览/检索结果: 共2条,第1-2条 帮助

限定条件    
已选(0)清除 条数/页:   排序方式:
New Jurassic mammaliaform sheds light on early evolution of mammal-like hyoid bones 期刊论文
SCIENCE, 2019, 365 (6450) : 276-+
作者:  Zhou, Chang-Fu;  Bhullar, Bhart-Anjan S.;  Neander, April I.;  Martin, Thomas;  Luo, Zhe-Xi
收藏  |  浏览/下载:8/0  |  提交时间:2019/11/27
Policy distortions, farm size, and the overuse of agricultural chemicals in China 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (27) : 7010-7015
作者:  Wu, Yiyun;  Xi, Xican;  Tang, Xin;  Luo, Deming;  Gu, Baojing;  Lam, Shu Kee;  Vitousek, Peter M.;  Chen, Deli
收藏  |  浏览/下载:9/0  |  提交时间:2019/11/27
crop yield  environmental protection  fertilizer use efficiency  socioeconomic barriers  urbanization