Dutcher l c and h e thomas (3 risultati)

Condizione: very good. from the abstract, "The major problem in the Tabulbah area, Tunisia, is that the current (1963) rate of pumping from wells is depleting the ground-water reservoir. The water being pumped from storage is of better quality than some of the water that replenishes the aquifers; so, even if the rate of withdrawal is reduced, the quality of water in some wells may deteriorate." DX4. softcover, 9" x 6", 29 pages, 5 foldout plates inside rear pocket. …

Condizione: very good. from the preface, "This report is the second of four being published by the U.S. Geological Survey, as chapters of Water Supply Paper 1757, on a project of technical assistance to the Government of Tunisia in hydrologic mapping and training." DX4. softcover, 9" x 6", 40 pages, 4 foldout plates inside rear pocket. …

Condizione: very good. from the abstract, "This report discusses the regional geologic and hydrologic features of the Sahil Susah (coastal area) and the large-bordering area in central Tunisia west of Susah. It considers the ground-water within this area of more than 24,000 square kilometers." DF3. orange wrap, 4 plates foldouts inside rear cover, 53 pages. …