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A STUDY ON SPATIAL STRUCTURES OF KARST MASSIF IN THE CASE OF HOUZHAI UNDERGROUND RIVER BASIN, PUDING COUNTY, GUIZHOU
Zhang Zhaogan, Yang Jianming, Wang Xiang, Shen Ping
Acta Geographica Sinica . 1997, (4): 345 -352 .  DOI: 10.11821/xb199704008