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Annual reports (in German)
Annual report 2023
Annual report 2022
Annual report 2021
Annual report 2020
Annual report 2019
Annual report 2018
Annual report 2017
Annual report 2016
Annual report 2015
Annual report 2014
Annual report 2013
Annual report 2012
Annual report 2011
Impressum & Disclaimer
Home
work
organization
About us
board
contact
become a member
Annual reports
Press and public
How we clean water
projects
Projects completed
archive
partner organizations
Technical documentation
Project process
How can i help
Become a member
Donations
Contact
