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  1. 1

    Ventilated improved pit latrines Zimbabwean brick designs by Morgan, Peter R

    Published 1985
    Book
  2. 2

    The design of pour-flush latrines by Mara, D. Duncan 1944-

    Published 1985
    Book
  3. 3

    The design of small bore sewer systems by Otis, Richard J.

    Published 1985
    Book
  4. 4

    The design of ventilated improved pit latrines by Mara, D. Duncan 1944-

    Published 1984
    Book
  5. 5

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