Subject
2 free books about metabolism, free to read online. Chapter 1 of any book is free, no account needed.
Physiological economy in nutrition, with special reference to the minimal proteid requirement of the healthy man an experimental study
R. H. Chittenden
Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man
Benedict, Francis Gano; Carpenter, Thorne M.