hutníctvo dejiny 8 [vynechat] baníctvo 7 [vynechat] 070.489 3 [vynechat] podnikové periodiká 3 [vynechat] 669 2 [vynechat] geológia 2 [vynechat] materiály 2 [vynechat] metallurgy 2 [vynechat] 050.8 1 [vynechat] 622 1 [vynechat] 622.34 1 [vynechat] 622.7 1 [vynechat] 669.1 1 [vynechat] banské mestá 1 [vynechat] dejiny baníctva 1 [vynechat] dejiny civilizácie 1 [vynechat] dejiny objavov a vynálezov 1 [vynechat] dejiny techniky 1 [vynechat] discoveries and inventions 1 [vynechat] geology 1 [vynechat] history of civilization 1 [vynechat] history of discoveries and inventions 1 [vynechat] history of mining 1 [vynechat] history of technology 1 [vynechat] medzinárodné desatinné triedenie 1 [vynechat] metrológia 1 [vynechat] mining 1 [vynechat] objavy a vynálezy 1 [vynechat] osobnosti 1 [vynechat]