E. Vassilopoulos, E. Karalis, and D. Koutsoyiannis, Technical report, Preliminary study of the water supply of Karystos and Kallianos municipalities from the Demosari springs, Commissioner: Prefectural Fund of Euboea, Contractor: E. Vassilopoulos, Report number 1, 82 pages, April 1983.
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Related project: Preliminary study of the water supply of Karystos and Kallianos municipalities from the Demosari springs