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| 2023 | T: Total | 12 299 |
| 1: Sole author ou unique author | 9 137 |
| 2: Several author | 1 876 |
| 3: No express authorship | 239 |
| 9: Not classified/unknown | 1 047 |
| 2022 | T: Total | 12 853 |
| 1: Sole author ou unique author | 9 465 |
| 2: Several author | 1 819 |
| 3: No express authorship | 259 |
| 9: Not classified/unknown | 1 310 |
| 2021 | T: Total | 12 302 |
| 1: Sole author ou unique author | 9 002 |
| 2: Several author | 1 881 |
| 3: No express authorship | 266 |
| 9: Not classified/unknown | 1 153 |
| 2020 | T: Total | 10 279 |
| 1: Sole author ou unique author | 7 434 |
| 2: Several author | 2 146 |
| 3: No express authorship | 249 |
| 9: Not classified/unknown | 450 |
| 2019 | T: Total | 12 308 |
| 1: Sole author ou unique author | 8 839 |
| 2: Several author | 2 651 |
| 3: No express authorship | 367 |
| 9: Not classified/unknown | 451 |
| Printed edited books (No.) by Type of book author; Annual - BNP, National Library of Portugal - Legal Deposit Number |
| Note(s): |
| (1) The 2023 and 2022 are provisional data. The 2022 and 2021 data were revised. |
| (2) Information extracted on 27-05-2024 |
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