Kurt Kloocke 
De la Religion, considérée dans sa source, ses formes et ses développements, Tome V [PDF ebook] 

The volume 21 of the Complete Works comprises the 5th and last part of On Religion. The critical apparatus and the 'Additional texts’ section take into account all available manuscripts to-date. The volume also includes an introduction, explanatory notes, a bibliography, as well as an index of names.

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