TY  - BOOK
AU  - World Book Inc
TI  - The circulatory system
T2  - World Book human body works
SN  - 9780716644255
U1  - 612.1 
PY  - 2007///
CY  - Chicago
PB  - World Book Inc.
KW  - Cardiovascular system
KW  - Juvenile literature
KW  - Heart
N1  - Includes bibliographical reference index
ER  -