Background values of 69 elements in catchment sediments of the China-Mongolia boundary region
LIU Hanliang, NIE Lanshi, SHOJIN Davaa, WANG Xueqiu, CHI Qinghua
Earth Science Frontiers . 2020, (3): 202 -221 .  DOI: 10.13745/j.esf.sf.2020.4.4