TY  - BOOK
AU  -  Roy,M K  .
AU  - Dastidar, Ghosh D  .
TI  - Cobol programming / 
U1  - 005.133COB 
PY  - 1982///
CY  - New Delhi : 
PB  - Mc-Graw Hill , 
KW  - Programming languageCOB
ER  -