首页 / 官方藏书 / How the shortage of skilled mechanics is being overcome by training the unskilled / UNDERWOOD TYPEWRITER CO., INC.

UNDERWOOD TYPEWRITER CO., INC.

How the shortage of skilled mechanics is being overcome by training the unskilled · United States. Council of National Defense. Committee on Labor. Section on Industrial Training for the War Emergency · 第 2 / 5 章