ISO 3767-4:1993/Amd 2:2008 拖拉机、农业和林业机械、动力草坪和园艺设备.操作者控制及其他显示用符号.第4部分:林业机械的符号.修改2:附加符号
Tractors, machinery for agriculture and forestry, powered lawn and garden equipment - Symbols for operator controls and other displays - Part 4: Symbols for forestry machinery - Amendment 2: Additional symbols