Creech, Sharon. <br/><br/>
Heartbeat  
Sharon Creech. 
 - New York :  HarperTrophy,  2005, c2004. 
 - 180 p. ;  20 cm. 
<br/><br/> "Joanna Cotler Books." 
<br/><br/> Twelve-year-old Annie ponders the many rhythms of life the year that her mother becomes pregnant, her grandfather begins faltering, and her best friend (and running partner) becomes distant. 
<br/><br/><label>ISBN: </label>0060540249 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Best friends--Fiction.<br/>Friendship--Fiction.<br/>Running--Fiction.<br/>Pregnancy--Fiction.<br/>Grandfathers--Fiction.