Schecle, Martin % 1920 <br/><br/>
Punch-card methods in research and documentation, with special reference to biology / tr. from the German, by J.E. Holmstrom, based on second rev. German ed. 

 - New York :  Interscience Publs.,  1961 
 - 274 p. 
 - Library Science and Documentation ; 2 .
<br/><br/> Monografía 
<br/><br/><label>Subjects--Index Terms: </label>Tarjetas perforadas Tarjetas perforadas - Biología 
<br/><br/><label>LC Class. No.: </label>Q180/A1S33