1. 01. English Non Fiction The digestive system, the urinary system.   Publication: Chicago : World Book, 2007 . 48 p. : 28 cm. Date:2007 Availability: Copies available: (1), Actions:
2. 01. English Non Fiction The digestive system; how living creatures use food, by Silverstein, Alvin. Publication: Englewood Cliffs, N.J., Prentice-Hall 1970 . 74 p. 22 cm. Date:1970 Availability: Copies available: (1), Actions: