Parker, Ralph Halsted % 1909 <br/><br/>
Library applications of punched cards : a description of mechanical systems 

 - Chicago :  ALA,  1952 
 - 80 p. 
<br/><br/> Monografía 
<br/><br/><label>Subjects--Index Terms: </label>Tarjetas perforadas - Bibliotecas 
<br/><br/><label>LC Class. No.: </label>Z715/P3