An all-purpose cookbook with a single intention, sound nutrition, Mr. Maddox' recipes (300) have all appeared in the A.M.A. magazine Today's Health and respect balance and variety. Any question of diet or dieting should be a matter of cutting ""down, not out."" The recipes are grouped in four basic categories: meat; fruit-vegetable; bread-cereal; and milk with a final ""treat"" group of richer foods to be used less frequently. On the whole they are easy to follow (canned and frozen foods are used when possible) and range from the hearty (beef in all forms, frankfurters) to the more eclectic (quail or bouillabaisse). Not as inviting as the Katzenbach book to follow, but there are a great many new ways of combining and preparing the necessary nutrients.