TY  - BOOK
AU  - Scheele,Martin,1920-
TI  - Punch-card methods in research and documentation,: with special reference to biology
AV  - Q180.A1 S33
U1  - 010.78 
PY  - 1961///
CY  - New York
PB  - Interscience Publishers
KW  - Punched card systems
KW  - Punched card systems -- Biology
N1  - Includes bibliographical references
ER  -