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2. European Committee for Standardization (CEN). Agricultural and forestry machinery—safety of log splitters—part 1: wedge splitters (Standard No. EN 609-1:1999). Brussels, Belgium: CEN; 1999.
3. European Committee for Standardization (CEN). Agricultural and forestry machinery—safety of log splitters—part 2: screw splitters (Standard No. EN 609-2:1999). Brussels, Belgium: CEN; 1999.
4. Berger LR, Mohan D. Injury control: a global view. Delhi, India: Oxford University Press; 1996.