You can order the German book "Kraft-Rucksack".
(The english version does not exist in print.)

We can send one or two books (within Austria) for free.

For that, write us an email at: info@kraft-rucksack.at

Or you can call us: +431/ 714 39 39 (Verein Ninlil)

For more than two books or for shipment to other countries,
we will bill you for the shipment.
Just send us an e-mail and we will let you know how much that costs.