TY  - BOOK
AU  - Jensen, C
TI  - Interpreting engineering drawings 
SN  - 978 0 8273 0061 3 0 8273 0061 1
U1  - 604 2 JEN 
PY  - 1972///
CY  - New York 
PB  -  Delmar
KW  - ENGINEERING DRAWINGS
ER  -