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China. In Chinese. GRASSLAND OF CHINA. (1). GRASSLAND OF CHINA. (4):64-67,51. Techn 
1989. 
Li, Xilai 1994. Determination of Barren Patch (BP) of HEI TU TAN Ling, Pa 19%. AGRICULTURAL REMOTE SENSING. In SURV 
Grassland in Guoluo Region. In Chinese with English abstract. Chinese. Beijing Agricultural University Press, Beijing. p301. Scient 
JOURNAL OF QINGHAI ANIMAL HUSBANDRY AND 
Rangelands in Jianshe townshi p area, Dareng county, 
Guol uo prefecture, (i nghai provi nce, Chi na 
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304 Intemational Archives of Photogrammetry and Remote Sensing. Vol, XXXII. Part 7. Budapest, 1998