TY  - BOOK
AU  - Helsel,Robert
TI  - Graphical programming: a tutorial for HP VEE 
SN  - 013362823X 
AV  - QA 76.65 .H45 1995
PY  - 1995///
CY  - Upper Saddle River, N.J.
PB  - Prentice Hall
KW  - Visual programming languages (Computer science)
KW  - Computer graphics
ER  -