Revision history of "Water management and drinking water conservation (including river basin management, water supply, specific climate change adaptation measures, district and consumer metering, charging systems and leak reduction)" (Q200661)

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9 February 2023

24 October 2021

31 May 2021

5 May 2021

28 April 2021

8 March 2021

26 July 2020

16 June 2020

7 February 2020

28 January 2020

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