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project vivo: Choices for Sustainable Living: insulation comparisons
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project vivo: Choices for Sustainable Living: min energy_factors water heaters
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project vivo: Choices for Sustainable Living: NAHB_Greywater_Reuse-Above_Ground
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project vivo: Choices for Sustainable Living: NAHB_Rainwater_Harvesting_System_Plan
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project vivo: Choices for Sustainable Living: NAHB SolarWaterHeater-ClosedLoopIndirectSys