The principal series are the Series Graeca (CCSG), Series Latina (CCSL), and the Continuatio Mediævalis (CCCM). There is also a smaller section, the Series Apocryphorum (CCSA), devoted to Apocryphal works, and a collection of autographs, the Autographa Medii Ævi (CCAMA). The series Conciliorum Oecumenicorum Generaliumque Decreta (COGD) contains confessional documents from Churches and Ecumenical organisations in the World with start in Nicæa 325 until today. The principal series are seen as successors to Migne's Patrologiae.
