前言我们是来自北方几个省的水文地质工作人员。文化大革命以来,在毛主席的革命路线指引下,我们和广大的贫下中农在一起,学习毛主席的光辉哲学思想,战斗在丛山峻岭之中,寻找地下水源。几年来,我们为发展山区水利事业,做了一些我们应该做的工作,受到了群众的欢迎。 Foreword We are hydrogeological staff from several northern provinces. Since the Cultural Revolution, under the guidance of Chairman Mao’s revolutionary line, we have been working with the vast majority of poor and middle peasants to study Chairman Mao’s glorious philosophical thinking, fighting among the steep mountains and looking for underground water sources. In the past few years, we have done some work that we should do to develop mountain water conservancy projects and are welcomed by the masses.