TY  - BOOK
AU  - Luzadder, Warren J.
AU  - Duff,Jon M.
TI  - Introduction to engineering drawing: The foundations of engineering design and computer aided drafting / 
SN  - 0-13-482373-7
U1  - 604.2 
PY  - 1989///
CY  - New Jersey : 
PB  - Prentice Hall Inc , 
ER  -