Hanson, Peggy L. <br/><br/>
Keypuncing 

 - Engliwood Cliffs  Prentice-Hall  1967 
 - x,148p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Punched card systems
<br/><br/><label>LC Class. No.: </label>QTO HF5548.H318