TY  - BOOK
AU  - Jensen,Cecil Howard
AU  - Helsel,Jay D.
TI  - Engineering drawing and design 
SN  - 0-07-032516-2
U1  - 624.04 
PY  - 1979///
CY  - New York 
PB  - Gregg Division, McGraw-Hill
KW  - Mechanical drawing
KW  - Engineering design
KW  - Engineering graphics
ER  -