The Internet Archive is the most reliable repository for free PDF copies of out-of-print or library-scanned volumes of the Biblia Patristica .
"Biblia Patristica" is a significant work that collects the biblical quotations and allusions used by the early Church Fathers. Here's what I found:
If you are a researcher:
For general patristic texts (though not the specific Biblia Patristica index), patristica.net offers a wealth of early Christian writings in various formats. Why Use the Biblia Patristica?
Basil of Caesarea, Gregory of Nazianzus, Gregory of Nyssa. biblia patristica pdf free
| Volume | Contents | Publication Year | |--------|----------|------------------| | Vol. 1 | Beginnings to Clement of Alexandria and Tertullian | 1975 | | Vol. 2 | The third century (except Origen) | 1977 | | Vol. 3 | Origen | 1980 | | Vol. 4 | Eusebius of Caesarea, Cyril of Jerusalem, Epiphanius of Salamis | 1987 | | Vol. 5 | Basil of Caesarea, Gregory of Nazianzus, Gregory of Nyssa, Amphilochus of Iconium | 1991 | | Vol. 6 | Hilary of Poitiers, Ambrose of Milan, Ambrosiaster | 1995 | | Vol. 7 | Didymus of Alexandria | 2000 | | Supplement | Philo of Alexandria | 1982 |
Finding a complete "free PDF" of the physical volumes can be difficult due to copyright, but the project has largely migrated to that are more efficient than the printed books: The Internet Archive is the most reliable repository
: This is the official digital evolution of the project. It integrates the data from the published Biblia Patristica volumes into a searchable online database. Access is completely free and currently covers over 650,000 biblical references.