author = { Amt, Stefan },

title = { Die bauliche Entwicklung der Festung Nienburg/Weser },

publisher = {},

isbn = {0007-6201},

keywords = { Befestigung , Festung , Landkreis Nienburg/Weser },

year = {1998},

abstract = {Mittelalter-19. Jh},

address = { },

url = { http://slubdd.de/katalog?TN_libero_mab2 }