| Author | Titles | | 1.
| A., Ph. | 1 | | 2.
| A pratice for everyday life (Firma) | 1 | | 3.
| A., pseud. | 0 | | 4.
| Author is: Viana, Abel, 1896-1964 | 117 | | 5.
| A. Q. | 1 | | 6.
| A. Q., pseud. | 0 | | 7.
| Author is: Quental, Antero de, 1842-1891 | 109 | | 8.
| A. R. S. B. F. | 1 | | 9.
| A., Ruben, 1920-1975 | 24 | | 10.
| Related author: Leitão, Ruben Andresen, 1920-1975 | 92 | | 11.
| A. S. | 1 | | 12.
| A. S. | 1 | | 13.
| A. S. D., 1970- | 0 | | 14.
| Author is: Sáez Delgado, Antonio, 1970- | 7 |
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