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Original standard DVGW GW 118 2017-04 in PDF full version. Additional info + preview on request

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Original standard DVGW GW 118 E 2015-11 in PDF full version. Additional info + preview on request

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Original standard DVGW GW 119 2002-01 in PDF full version. Additional info + preview on request

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Original standard DVGW GW 12 1984-04 in PDF full version. Additional info + preview on request

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Original standard DVGW GW 12 A 2010-10 in PDF full version. Additional info + preview on request

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Original standard DVGW GW 120 1998-07 in PDF full version. Additional info + preview on request

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