TY  - BOOK
AU  - Nelson,John A.
TI  - Drafting for trades & industry: basic skills 
SN  - 0827318413
AV  - T353 .N43 1979
U1  - 604.2/4 
PY  - 1979///
CY  - Albany, N.Y.
PB  - Delmar Publishers
KW  - Mechanical drawing
ER  -