Bacteria and viruses 
edited by Kara Rogers. 
 - New York  Britannica Educational Publishing;Rosen Educational Services  2011. 
 - 216 p.  ill.  23 cm. 
 - Biochemistry,cells,and life .
<br/><br/> "In association with Britannica Eduactional Publishing, Rosen Eduactional Services. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781615303069 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bacteria--Popular works<br/>Viruses--Popular works