| GMD | Text |
| Classification | 616.01 KAT |
| Publisher | New York, Scholastic, 1996 |
| Subject | Bacteria -- Juvenile literature.Viruses -- Juvenile literature. |
| Topic | Beginning Reader (0L-200L)IPC |
| Series | Hello reader!, Level 3. |
| Description | 1 v. (unpaged) : col. ill. ; 23 cm. |
| ISBN | 9780590672955 |
| Additional ISBN | 078073003990 |