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水电部松辽水利委员会副主任周德亮同志在松辽流域首届水土保诗经验交流会议上的总结讲话(摘要)
Speech by Comrade Zhou De Liang, Deputy Director of Songliao Water Conservancy Commission, at the First Meeting of Experience Sharing on Soil and Water Conservation in Song and Liao Watersheds (Summary)