TY  - BOOK
AU  - Henderson,W.
TI  - The library catalogs : : their preservation and maintenance by phot ographic and automation technologies ... / 
U1  - 025.3 
PY  - 1968///
CY  - Massachusetts : 
PB  - M. I. T., 
KW  - Library catalogs
KW  - Automation
KW  - Libraries
ER  -