1978 xv, 334 p., num. figs, hardbound. Ex library (with his name written on first free end-paper) of Jürgen Walther Ludwig Aschoff (1913-1998), a German physician, biologist and behavioral physiologist. Together with Erwin Bünning and Colin Pittendrigh, he is considered to be the co-founder of the field of chronobiology. Good copy.