France (2) Church history (2) Twentieth century (2) 20th century (2) History--20th century (2) Science (2) Cristianismo--Historia (2) Historia eclesiástica (2) Ciencias (2) 20e siècle (2) Publics (2) Histoire religieuse (2) 20e siècle (2) Vingtième siècle (2) Sciences (2) histoire religieuse (2) France (2)