TY  - GEN
AU  - Martin, Justin McCory
TI  - Muscles
T2  - Science sight word readers
SN  - 9780545247962
CY  - New York
KW  - Exercise Book
KW  - Children's Literature
KW  - Human body
N2  - When you smile, muscles are hard at work. Learn more facts about your muscles in this book. (Grade level: Kindergarten - 2
ER  -