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  1. 1
    Municipal wastewater treatment in Central and Eastern Europe : present situation and cost-effective development strategies /
    od Somlyódy, L. (László)
    Wydane 1998
    "A report for the Environmental Action Programme for Central and Eastern Europe."
    Książka
  2. 2
    Sanitation in developing countries /
    Wydane 1978
    Papers presented at a conference held at Pembroke College, Oxford, July 5-9, 1977.
    Książka
  3. 3
    Impact of different approaches for improvement of sanitation coverage in Comilla /
    od Sharifullah, A. K.
    Wydane 1996
    "Executed by: Bangladesh Academy for Rural Development ... in collaboration with UNICEF Divisional Office, Chittagong, Bangladesh, November 1996."
    Książka
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