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A STUDY ON BACKGROUND VALUES OF Fe AND Mn AND THEIR FORMATION FACTORS IN THE XIANGJIANG RIVER SYSTEM
Zhao Guijiu, Zhang Lichang, Zhang Shen
SCIENTIA GEOGRAPHICA SINICA . 1987, (2): 179 -185,196 .  DOI: 10.13249/j.cnki.sgs.1987.02.179