13.-0806. Improved supply.

Watsan matters
13.-0805. Improved sanitation.
13.-0804. Improved sanitation facility.
13.-0803. Improved drinking water sources.
13.-0802. Improved - protected well.
13.-0801. Implementing partners.
13.-0800. Implementation support tools.
13.-0799. Impervious.
13.-0798. Impermeable, impervious.
13.-0797. Impermeable layer.
13.-0796. Impeller.
13.-0795. Impeller trim.
13.-0794. Impact investor.
13.-0793. Immediate emergency phase.
13.-0792. Imhoff tank.
13.-0791. Igneous.
13.-0790. Igneous rock.
13.-0789. Icebreaker.
13.-0788. Ice.
13.-0787. Hypoxis.
13.-0786. Hyperthermophiles.
13.-0785. Hygiene.
13.-0784. Hygiene promotion.
13.-0783. Hygiene frameworks and approaches.
13.-0782. Hygiene education.
13.-0781. Hygiene behaviour changes.
13.-0780. Hyetograph.
13.-0779. Hydroxyapatite - ( HAP ).
13.-0778. Hydrosphere.
13.-0777. Hydropower.