RYBALHI, L. Geothermal systems: Principles and case histories. John Wiley.
Lua i Stíl Chicago (17ú heag.)RYBALHI, L. Geothermal Systems: Principles and Case Histories. John Wiley.
Lua MLA (8ú heag.)RYBALHI, L. Geothermal Systems: Principles and Case Histories. John Wiley.
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