all_nuts_codes          List of all NUTS codes and classifications
cross_walks             Conversion table provided by the Joint Research
                        Center of the European Commission
manure                  Manure storage facilities by NUTS 3 regions
                        from Eurostat (aei_fm_ms)
nuts_aggregate          Aggregate to higher order NUTS levels
nuts_classify           Classify version of NUTS codes
nuts_convert_version    Convert between NUTS versions
nuts_get_data           Return classified NUTS data
nuts_get_missing        Return missing NUTS codes in classified NUTS
                        data
nuts_get_version        Return version overlap of classified NUTS data
nuts_test_multiple_versions
                        Helper function to test for multiple versions
patents                 Patent applications to the EPO by priority year
                        by NUTS 3 regions (pat_ep_rtot)
