TY  - BOOK
AU  - Unwin,W (William) Cawthorne
AU  - Mellanby,Alexander Lawson
TI  - The elements of machine design,
PY  - 1927///-1931
CY  - London, ; , New York ; , Toronto : 
PB  - Longmans, Green and co. ltd., 
KW  - DISEÑO DE MÁQUINAS
ER  -