bezpečnosť práce 1 [vynechat] ergonómia 1 [vynechat] health protection 1 [vynechat] human engineering 1 [vynechat] machine equipment 1 [vynechat] occupational safety 1 [vynechat] ochrana zdravia 1 [vynechat] pracovné prostredie 1 [vynechat] strojné zariadenia 1 [vynechat] work environment 1 [vynechat]