TY - GEN N1 - 21 cm ; ilustracje N1 - ISSN 0009-6172 L1 - http://rcin.org.pl/Content/69150/PDF/KR038_87857_r1994-t50-no4_ChPO-Alexandrowicz_s31-46.pdf M3 - Text PY - 1994 IS - 4 EP - 46 KW - Crystal Caves A1 - Alexandrowicz, Zofia PB - Institute of Nature Conservation of the Polish Academy of Sciences VL - 50 CY - Kraków SP - 31 T1 - Conservation of Crystal Caves - history and the present UR - http://rcin.org.pl/dlibra/publication/edition/69150 ER -