Downs, Robert Bingham,  1903-1991, <br/><br/>
How to do library research / 
By Robert b. downs, assisted by Elizabeth c. downs. 
 - 179 páginas 
<br/><br/> "additional sources on information": p. 157-58. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bibliotecas--Manuales<br/>Obras de consulta--Bibliografía
<br/><br/><label>LC Class. No.: </label>Z1035  / D68