Expansive classification. Outline

A Generalia.
A General works.
Ae General encyclopedias.
Ap General periodicals.
Ar Reference works.
As General societies.

B-D Spiritual sciences.
B Philosophy.
Ba-Bf National Philosophies and Systems of philosophy.
Bg Metaphysics.
Bh Logic.
Bi Psychology.
Bm Moral Philosophy.
Br Religion, Natural theology.
Bt Religions
Bu Folk-lore.
Ca Judaism.
Cb Bible.
Cc Christianity.
Cce Patristics.
Ce Apologetics, Evidences.
Cf Doctrinal theology.
Ck Ethical theology.
Cp Ritual theology and church Polity.
Cx Pastoral theology.
Cz Sermons.
D Ecclesiastical history.