by
Dr. Theodor Hettinger
Language: English
Release Date: June 28, 2017
First published in 1961, “[T]his book is the result of ten years of research and experiment in the problems of muscle strength and muscle training at the Max-Planck-Institut für Arbeitsphysiologie, Dortmund, Germany supplemented by further work at the Lankenau Hospital, Division of Research, Philadelphia,...