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An Objective Approach to Definitions and Investigations of Continental Hydrologic Droughts

Vujica M. YevjevichW. T. DickinsonMel HollandGeorge L. Smith

出版	Colorado State University, 1967
URL	http://books.google.com.hk/books?id=4Wp5zQEACAAJ&hl=&source=gbs_api