Utilising possibilities of old postcards in research of surface relicts after raw material mining

HRONČEK, Pavel - HVIZDÁK, Ladislav - ŠTRBA, Ľubomír. Utilising possibilities of old postcards in research of surface relicts after raw material mining. In Acta geoturistica. - Košice : Technical university Košice, BERG, 2011. ISSN 1338-2292, 2011, vol. 2, no. 1, pp. 46-60.