On the bus, on the case /
by Steve Brezenoff ; illustrated by C.B. Canga. --
- Limited ed. --
- Mankato, Minn. : Stone Arch Books, c2010.
- 238 p. : col. ill. --
- Field trip mysteries .
"4 mysteries, 1 book"--Cover.
The painting that wasn't there -- The village that almost vanished -- The teacher who forgot too much -- The zoo with the empty cage.