TY  - BOOK
AU  - Derr,Louis
TI  - Cyclopedia of engineering : : a Complete Manual of Stea and Machine-shop Practice, Designed to Afford Practical Help in the Machinist, the Mill Superintendent and Foreman, the Master Mechanic and the Workman
PY  - 1905///
CY  - Chicago : 
PB  - American technical society, 
N1  - Donación Azzarini
ER  -