8,422 titles
| Acta Linguistica | 1951-1996 | Budapest, Hungary |
| Acta Litteraria | 1957-1991 | Budapest, Hungary |
| Acta Mathematica | 1950-1995 | Budapest, Hungary |
| Acta Medica | 1950-1994 | Budapest, Hungary |
| Acta Microbiologica | 1954-2001 | Budapest, Hungary |
| Acta Morphologica | 1951-1992 | Budapest, Hungary |
| Acta Musei Napocensis | 1964-1993 | Cluj-Napoca, Romania |
| Acta Musei Porolissensis | 1978-1985 | Zalău, Romania |
| Acta Oeconomica | 1966-1995 | Budapest, Hungary |
| Acta Orientalia | 1950-2000 | Budapest, Hungary |
| Acta Paediatrica | 1960-1994 | Budapest, Hungary |
| Acta Physica | 1951-1994 | Budapest, Hungary |
| Acta Physiologica | 1950-1999 | Budapest, Hungary |
| Acta Phytopathologica et Entomologica | 1966-2001 | Budapest, Hungary |
| Acta Silvatica et Lignaria Hungarica | 2005-2023 | Budapest, Hungary |
| Acta Technica | 1950-1997 | Budapest, Hungary |
| Acta Technica Napocensis | 1994-2001 | Cluj-Napoca, Romania |
| Acta Veterinaria | 1951-1998 | Budapest, Hungary |
| Acta Zoologica | 1954-2002 | Budapest, Hungary |
| Acțiunea | 1935-1939 | Sibiu, Romania |
