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donald g jordan
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Cilt sonuçları
Programming for parks, recreation, and leisure services
Debra J. Jordan, Donald G. Degraaf, Kathy H. Degraaf · Venture Pub
318 sayfa · 2005
Recreation / Management / Recreation leadership / Leisure / Planning
Water supply and waste disposal, Culebra, Puerto Rico
Donald G. Jordan · U.S. Geological Survey, Water Resources Division
30 sayfa · 1976
Groundwater / Waste disposal in the ground / Water quality