Jordan, T. D. (1980). A handbook of gravity-flow water systems: For small communities. Intermediate Technology.
Chicago-viite (17. p.)Jordan, Thomas D. A Handbook of Gravity-flow Water Systems: For Small Communities. London: Intermediate Technology, 1980.
MLA-viite (8. p.)Jordan, Thomas D. A Handbook of Gravity-flow Water Systems: For Small Communities. Intermediate Technology, 1980.
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