TY  - BOOK
AU  - Bell Douglas
TI  - The essence of program design
SN  - 9788131756812
AV  - 005.12 BED T Book
U1  - 005.12 BED T 
PY  - 2011///
CY  - New Delhi
PB  - Pearson education
KW  - Distance Education
N1  - Distance Education
ER  -