TY  - GEN
AU  - Davies,B.L.
AU  - Robothan, A.J
TI  - Computer-aided drawing and design 
SN  - 9780412342301 (paperback)
U1  - 670.285 
PY  - 1986///
CY  - London
PB  - Chapman
KW  - Engineering Design/ Mechanical Drawing
ER  -