The digestive system; how living creatures use food Book 708/Completed:
LC Control Number:
Englewood Cliffs, N.J., Prentice-Hall 
Silverstein, Virginia B., joint author.
Erikson, Mel, illus.
74 p. illus. (part col.) 22 cm.
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.