Search Results - Helvetas

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  1. 1
    Latrine construction : technical manual series on rural water supply and sanitation, manual 1

    Latrine construction : technical manual series on rural water supply and sanitation, manual 1 by Herath, Neil com

    Published 2001
    “…Helvetas…”
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  2. 2
    Vasikili idikirima : gramiya jalasampadana ha saniparakshava pilibanda athpoth malava, athpotha 1

    Vasikili idikirima : gramiya jalasampadana ha saniparakshava pilibanda athpoth malava, athpotha 1 by Herath, Neil com

    Published 2001
    “…Helvetas…”
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  3. 3
    Athin kaninu labana lin : gramiya jalasampadana ha saniparakshava pilibanda athpoth malava, athpotha 2

    Athin kaninu labana lin : gramiya jalasampadana ha saniparakshava pilibanda athpoth malava, athpotha 2 by Herath, Neil com

    Published 2002
    “…Helvetas…”
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  4. 4
    Sri Lankave sarvodaya gammana vala jala sampadana idi kirima sandaha pramithi athpotha = Manual of standardization for the construction of village water supplies in sarvodaya villages in Sri Lanka

    Sri Lankave sarvodaya gammana vala jala sampadana idi kirima sandaha pramithi athpotha = Manual of standardization for the construction of village water supplies in sarvodaya vill...

    Published 1986
    “…Helvetas; Colombo…”
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