Barzun, Jacques ;  Graff, Henry F <br/><br/>
The Modern Researcher 

 - 1ª ed. 
 - New York :  Harcourt Brace,  1962 
 - 386 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>HISTORIA-INVESTIGACIONES
<br/><br/><label>Dewey Class. No.: </label>907  / B296m