Catalogus Codicum Astrologorum Graecorum

Catalogus Codicum Astrologorum Graecorum (CCAG) is a 12-volume (including appendices) catalogue of astrological writings in Greek.

The CCAG edited, described, and excerpted from texts found in libraries throughout Europe, most edited and catalogued for the first time.

[1] The CCAG was published between 1898 and 1953 in Brussels.

The chief editors in the earlier period of publication were Franz Cumont and Franz Boll.

[2] The CCAG was described as the "most important" modern survey of Greek astrological writings.