The digestive system; how living creatures use food,
by Alvin Silverstein and Virginia B. Silverstein. Illustrated by Mel Erikson.
- Englewood Cliffs, N.J., Prentice-Hall [1970]
- 74 p. illus. (part col.) 22 cm.
- [Systems of the body] .
Briefly discusses the various ways plants and animals obtain and utilize food, describes the human digestive system and what happens to a roast beef sandwich when it is eaten, and explains the principles of nutrition.