Bestselling Austrian author Dr.
In this, his first book translated into E.
He replaced all plywood and chipboard in their home with Natural timber and the boys regained their health.
On their quest to establish a healthy home environment, Erwin tried out his grandfather\'s Traditional methods.
Through the illness of their sons, his family discovered that some modern building materials can cause serious health problems.
Erwin Thoma reveals a wealth of knowledge regarding trees, forests and wood.
Bestselling Austrian author Dr