Manufacture
In the earth books the content is visibly sealed and a mark (column,
row, book number) allows to identify place and donor. The books are
secured with a steel wire running through holes in the protruding
covers.
Sealing of earthbooks
(Photo: Badulo Bahlburg)
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An empty earthbook
(Photo: Badulo Bahlburg)
For each earth book about 0.5 litres earth, in a closed container, and
the corresponding legend is needed.
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