TY  - BOOK
AU  - Scheele,Martin
AU  - Holmstron,J.E
TI  - Punch-card methods in research and documentation: with special reference to biology 
U1  - 010.78 
PY  - 1961///
CY  - New York
PB  - Interscience Publishers
KW  - Punched card systems
KW  - Biology
N1  - Includes index
ER  -