To the class rocks associated with economy correspond these 1 documents.
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economy : technologies : history : rocks : organisms : Staffora valley and Oltrepò : Tidone valley : Trebbia valley | Monografia di Bobbio : ovvero cenni storici, statistici, topografici ed economici / Daniele Bertacchi – tip' Chiantore : Pinerolo : 1859 |
Where the Apennine begins. Books and articles. Results of the search by class / Gabriele Merli, Fulvio Bisi, Claudio Gnoli : interface with the database -- <http://www.iskoi.org/ilc/4p/libri.en.php> : 2005.11 - 2008.12 -