O'Connell, Theodore X. <br/><br/>
USMLE step 2 secrets :questions you will be asked /Theodore X. O'Connell. 

 - Fourth edition. 
 - Philadelphia, PA  Elsevier/Mosby  2014 
<br/><br/><label>ISBN: </label>9780323188142 
<br/><br/><label>National Library of Medicine Call No.: </label>WB 18.2 O'CO 2014