TY  - BOOK
AU  - Penfold, John W.
TI  - Microsoft visual basic : : programmers companion 
SN  - 8186011889
U1  - 006.37  1
PY  - 1994///
CY  - New Delhi
PB  - Galgotia Publication Pvt Ltd
KW  - The basic language
KW  - Calculator projects
KW  - File -based projects
ER  -