https://digitalarchive.tpl.ca/internal/media/dispatcher/2077266/fullHalf hours underground : volcanoes, mines and caves1897[com.gallerysystems.emuseum.core.entities.RecordXPerson@8b4b07, com.gallerysystems.emuseum.core.entities.RecordXPerson@8b00c3, com.gallerysystems.emuseum.core.entities.RecordXPerson@8c32b1, com.gallerysystems.emuseum.core.entities.RecordXPerson@8b88ac, com.gallerysystems.emuseum.core.entities.RecordXPerson@8a4aec]com.gallerysystems.emuseum.core.entities.RecordXPerson@8b4b07xii, 369 pages : illustrations ; 20 cmcom.gallerysystems.emuseum.core.entities.Classification@bbhttps://digitalarchive.tpl.ca/objects/318142/rdf