TY  - BOOK
AU  - Collopy, David M. ,
TI  - Introduction to COBOL : a guide to modular structured programming 
SN  - 9788131711354
U1  - 005.133 COL 
PY  - 2000///
CY  - New Delhi
PB  - Pearson Education
N1  - Includes index.
ER  -