TY  - GEN
AU  - Hoffman, James David, 
AU  - Scipio,Lynn Adolphus
TI  - Elements of machine design
T2  - Engineering series, ed. by A. A. Potter
AV  - SPE0168 
PY  - 1928///
CY  - New York : 
PB  - Ginn and company
KW  - Machine design
ER  -