USMLE step 1 :   qbook /  
editors, Michael S. Manley, Leslie D. M anley; contributing editor, Mary Ruebush. 
 - [s.l] :   Kaplan Medical ,   c2002. 
 - ix, 440 p. ;    28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medicine --Examination questions.------
<br/><br/><label>National Library of Medicine Call No.: </label>WB18.2   /  Us5s 2002