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A professor explaining a biogas plant to the audience.
serie
Cam
NEX-7
Exposer Time
1/400s
Aperture
f/6.3
The last episode of the Ruhrpott tetralogie is now online at Ruhrpott Part IV - long…
Biogas workshop II
Books
Digital Permaculture - design for personal digital sustainability. ~352 pages.
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