Diet and Health: With Key to the Calories. E-book. Formato PDF Lulu Hunt Peters   -  Forgotten Books, 2017  - 

I am sorry I cannot devise a key by which to read this book, as well as a Key to the Calories, for sometimes you are to read the title headings and side explanations before the text. Other times you are supposed to read the text and then the headings. It really does not matter much as long as you, read them both. Be sure to do that. They are clever. I wrote them myself.