TY  - BOOK
AU  - Collopy, David M.
TI  - Introduction to COBOL: A Guide to Modular Structured Programming 
SN  - 9788131711354
U1  - 005.133 21
PY  - 2000///
CY  - New Delhi
PB  - Pearson Education
KW  - COBOL (Computer program language)
KW  - Structured programming
N1  - Includes index
ER  -