TY - GEN L2 - http://ww.bibliotekacyfrowa.pl/Content/131023 KW - Enrich Europeana Plus KW - petrography KW - manuscript map KW - cartography KW - bituminous coal - geology KW - Lower Silesian Coal Basin KW - geology UR - http://ww.bibliotekacyfrowa.pl/dlibra/publication/edition/131023 ER -