Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 2: Introduction to the physics of low-noise design— 50 стр.
Tractors, machinery for agriculture and forestry, powered lawn and garden equipment. Symbols for operator controls and other displays. Common symbols (review)— 40 стр.
Forestry and gardening machinery -- Vibration test code for portable hand-held machines with internal combustion engine -- Vibration at the handles— 36 стр.