摘要
20080817 Tang Qifeng(School of Earth Science and Mineral Resources,China University of Geosciences,Beijing 100083,China);Yang Zhongfang study of Elements Flux and Sources from Atmospheric Bulk Deposition in the Chengdu Economic Region(Earth Science Frontiers,ISSN1005-2321,CN11-3370,14(3),2007,p.213-222,6 illus.,5 tables,39 refs.)Key