00963nam--2200325---450099000107574020331620020507103520.0000107574USA01000107574(ALEPH)000107574USA0100010757420020507d1979----km-y0ENGy0103----baengDEAutonomous CategoriesMichael Barrwith and appendix by Po-Hsiang ChuBerlinSpringer verlag1979138 p.ill.24 cmLecture notes in mathematics7522001Lecture notes in mathematics752512.55BARR,Michael54302ITsalbcISBD990001075740203316510 LNM 752897551000109850BKSCIALESSANDRA9020020507USA011035PATRY9020040406USA011714-Autonomous categories911134UNISA