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by Kant, Immanuel; Gregor, Mary; Timmermann, Jens; et al.
by Lee, John; Bartlett, Ray; Berry, Oliver; et al.
by Balfour, Amy; Clark, Gregor
by Waby, Tasmin; Averbuck, Alexis; Balsam, Joel; et al.
by Cailliet, Gregor M.; Love, Milton S.; Ebeling, Alfred W.
by Immanuel Kant , Edited by Mary J. Gregor , Introduction by Allen W. Wood
by Marx, Karl (Author); Livingstone, Rodney (Translator); Benton, Gregor (Translator)
by BENTON; GREGOR
by Halff; Gregor