American-polish post diploma studies for "environmental friendly restructurisation of heavy industry"

by Barglik, J., Krupka, D., Sosnovski, R.
Source: 1. Acta Metallurgica Slovaca 1. 1335-1532 1. Roč. 3, č. 2/2(1997), s. 493-495

Silver in Poland - achievements in research and production

by Bojanowski, A., Chmielarz, A., Krupka, D., Sitko, J.
Source: 1. Acta metallurgica slovaca 1. 1335-1532 1. Roč. 9, č. 2 (2003), s. 76-89