TY  - BOOK
TI  - Learning about matter
T2  - Learning playground ; #7
SN  - 9780716602347
U1  - 530 
PY  - 2012///
CY  - Chicago
PB  - World Book
KW  - Matter
KW  - Constitution
KW  - Juvenile literature
KW  - Properties
N1  - Primary
ER  -