MAPPING OF SOIL BACKGROUND CONTENT IN BEIJING AREA
Received date: 1987-12-01
Online published: 1989-01-15
李廷芳, 刘宝元 . 北京地区土壤背景值图的编制[J]. 地理学报, 1989 , 44(1) : 11 -21 . DOI: 10.11821/xb198901004
Key words: Soil background content; Mapping unit; Statistic map of grades
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