[Enforcing the wear of individual protective ear cover for tractor drivers].
D000383:Agriculture; D004430:Ear Protective Devices; D005859:Germany, East; D006317:Hearing Loss, Noise-Induced / Q000517:prevention & control*; D006801:Humans; D009784:Occupational Diseases / Q000517:prevention & control*; D011482:Protective Devices
Zur Durchsetzung des Tragens von individuellem Gehörschutz bei Traktoristen.