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@noha
Norbert Hartl noha

ApptiveGrid GmbH cologne, germany

@jvalteren
Jonathan van Alteren jvalteren
Open-minded analytical thinker and software craftsman, interested in ways to use software to contribute to a more sustainable society.

Groningen, Netherlands

@RalfBarkow
Ralf Barkow RalfBarkow

@dreyeck Earth – The Blue Marble