drawings 3 [vynechat] výkresy machinery 2 [vynechat] normy a štandardy 2 [vynechat] standards 2 [vynechat] strojárstvo 2 [vynechat] technical drawing 2 [vynechat] technické kreslenie 2 [vynechat] autografy 1 [vynechat] autographs 1 [vynechat] children's literature 1 [vynechat] discoveries and inventions 1 [vynechat] názorne modely 1 [vynechat] objavy a vynálezy 1 [vynechat] pop-up picture books 1 [vynechat] publikácie pre deti 1 [vynechat] visual models 1 [vynechat]