  Historical Variability of Rainfall in the African East Sahel of Sudan Implications for Development [SpringerBriefs in Earth Sciences] (Paperback) ISBN-13: 9783319005744 ISBN-10: 331900574X Genres: Science & Math, Engineering & Transportation ?  Mathematical Primer on Groundwater Flow a an Introduction to the Mathematical and Physical Concepts of Saturated Flow in the Subsurface (Paperback) ISBN-13: 9780138964993 ISBN-10: 0138964998 Genres: Science & Math, Engineering & Transportation ? |
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