Series A volumes of the Thesaurus Patrum Latinorum consist of a printed Enumeratio formarum, an Index formarum a tergo ordinatarum, either printed or on microfiche, and a Concordantia formarum on microfiche.

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• First volume: 1986 (Thesaurus  Sancti Gregorii Magni)

• Number of volumes published: 27

• Publication frequency: Discontinued

• Editorial responsibility: CETEDOC, and from October 2001 onwards CTLO

• Publishing manager: Bart Janssens