TY  - BOOK
AU  - Spencer, Henry Cecil.
TI  - Technical drawing problems
U1  - 604 
CY  - New York
PB  - Macmillan Publishing Company
KW  - MCE
N1  - 0; 0; 0; 604_000000000000000_SPE; 0; 0; 0; 604_000000000000000_SPE
ER  -