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| English | Italian |
| internal "Environmental Guidelines" manual | manuale per uso interno "Direttive per l'ambiente" |
| internal European market | mercato europeo interno |
| internal migration A population shift occurring within national or territorial boundaries, often characterized by persons seeking labor opportunities in more advantageous areas | migrazione interna |
| internal waste disposal site | zona interna adibita allo smaltimento dei rifiuti |