Ítems similars: The seven caves;
- Cave explorations in Irán, 1949 /
- Guidelines for cave and karst protection /
- Archaeology from the earth /
- Archaeological explorations in escalerillas street, city of Mexico, yuear 1900 /
- An archaeological survey of Pickwick basin in the adjacent portions of the states of Alabama, Mississippi and Tennessee /
- Digging up the past /