摘要
20071597 Liu Shumin(Qingdao Geology and Engineering Investigation Institute,Qingdao 266071,China);Ding Zhijiang Positioning Precision of Portable GPS and Its Applica- tion to the Arrangement of Geophysical and Geochemical Exploration Networks(Geo- physical and Geochemical Exploration,ISSN 1000-8918,CN11-1906/P,29(6),2005, p.545-547,4 tables,1 ref.) Key words:Global Positioning
