TY  - BOOK
TI  - IBM 447 accounting machine
U1  - 510.7834 
PY  - 1975///
CY  - New Delhi
PB  - IBM World Trade Corporation
KW  - IBM 447 (Computer) - Programming
KW  - Programming language (Electronic Computers)
KW  - Electronic digital accounting - Management
N1  - Cover title: Reference manual IBM 447 accounting machine
ER  -