@book{ title = "The seven liberal arts", author = "Abelson, Paul", year = "1965", publisher = "Russell & Russell", address = "New York", edition = "2. ed., reissued", title = "a study in mediaeval culture", language = "eng", keywords = "Hochschulschrift,Artes liberales,Allegorie,Geschichte", note = "Zugl.: New York, NY, Columbia Univ., Diss., 1906", series = "Contributions to education, 11", }