TY  - BOOK
AU  - Walker J . R
TI  - Exploring Metric Drafting: basic fundamentals
SN  - 0870062891
AV  - T 353 .W23 1980 
PY  - 1980///
CY  - U S A
PB  - The Goodheart- Willocox Co, Inc
KW  - Mechanical Drawing
KW  - Metric system
ER  -