TY  - BOOK
AU  - Greenburg, Dan
AU  - Davis, Jack E.
TI  - Great-grandpa's in the litter box ; Through the medicine cabinet
SN  - 0448428253
U1  - Fic 
PY  - 1996///
CY  - New York
PB  - Grosset & Dunlap
N2  - Contains the first two Zack files novels
ER  -