TY  - BOOK
AU  - Walker, John R.
TI  - Exploring drafting: fundamentals of technology / 
SN  - 087006620x
U1  - FOR 604.2 W15e 1987 
PY  - 1987///
CY  - Illinois
PB  - The Goodheart-Willcox Company, Inc.
KW  - Technical drawing.
N1  - Includes index
ER  -