First aid for the USMLE step 1 2012 / 
 USMLE step one 
Tao Le ... [et al.]. 
 - New York :  McGraw-Hill Medical Pub. Div.,  c2012. 
 - xii, 680 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781260143683 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Study guides.
<br/><br/><label>LC Class. No.: </label>R 834.5  / .F57 2013