Programme of a comprehensive protection of underground historic complexes and underground municipal sets as regards mining and construction / Janusz CHMURA, Tadeusz MIKOŚ // W: The selected problems of the UMM activity on the area of environmental protection and engineering : the Polish-Romanian conference : February, 2003 / ed. Włodzimierz P. Kowalski ; The Stanislaw Staszic University of Mining and Metallurgy. The Walery Goetel School of Environmental Protection and Engineering. — Cracow : AGH-UMM. The Walery Goetel SEPE, 2003. — S. 110–111