621.7 621 2 Exclude matching results 669 2 Exclude matching results 338.45 1 Exclude matching results 620.1 1 Exclude matching results 621.8 1 Exclude matching results mechanická technológia všeobecne 1 Exclude matching results metalurgia 1 Exclude matching results prvky strojov 1 Exclude matching results strojárstvo 1 Exclude matching results všeobecné strojárstvo 1 Exclude matching results