Brünner, S.; Otte, C. (2014) Your professional exercise manual Bioswing Improve. Haider Bioswing, Pullenreuth, 4th edition.
Chiropraktiker, Heilpraktiker, Sportwissenschaftler
Brünner, S.; Otte, C. (2014) Your professional exercise manual Bioswing Improve. Haider Bioswing, Pullenreuth, 4th edition.