TY  - BOOK
AU  - Esbensen,Barbara Juster
TI  - Sponges are skeletons
T2  - Let's-read-find-out-science
SN  - 0064451844
U1  - 428.6 23
PY  - 1993///
CY  - New York : 
PB  - HarperCollins , 
KW  - Readers
N1  - Stage 2
ER  -