TY - BOOK T1 - Gear design simplified A1 - Jones, Franklin D. LA - English PP - New York PB - The industrial Press YR - 1940 UL - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/das.5122 OP - 139 KW - MinerĂ­a ER -