2. Rural Energy - Draft Animals - Animal-Powered Systems
3. Historical Photos and Illustrations
4. Animal Energy-Living Energy
5. Draft Animals: All Work and No Play?
6. Water-Raising Facilities as Examples for the Efficiency of Animal-Powered Systems
7. Profiles .
8. Animal Power plus Local Handicrafts.
9. Fifteen Comprehensive Theses for the Propagation of Animal-Power Technology.
3. Historical Photos and Illustrations
Fig.: "Power gear with self-acting device for the equalization of tractive forces and self- acting whip for hastening lazy draft animals" (patent no. 35013, German Imperial Patent Office)
