· PDF file* (1990), STAS 1478-90, Alimentarea cu apä a constructiilor civile si industriale * (1987), STAS 1795-87, Canalizäri *** (1985), Stas 1504-85,

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· PDF file*** (1990), STAS 1478-90, Alimentarea cu apä a constructiilor civile si industriale *** (1987), STAS 1795-87, Canalizäri *** (1985), Stas 1504-85,

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· PDF file* (1990), STAS 1478-90, Alimentarea cu apä a constructiilor civile si industriale * (1987), STAS 1795-87, Canalizäri *** (1985), Stas 1504-85,