Эх үүсвэрүүд Tagged: Hydrological Cycle
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in writing this book the authors have had two kinds of readers in mind. The first is the economic or political decision maker who is neither a specialist in water sciences nor has the time to study long and learned works, and the second is the student or the interested layman who wants to obtain...
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2020-01-01 The purpose of this book is to assist the reader in choosing the best method for providing clean water in a developing country. Various approaches are clearly described, and case studies provided, to illustrate the importance of matching need and method when resources are limited. John Dracup in...