@book{ Solr-KXP-PPN213535238, title = {Die Burgruine Alt-Wartburg im Kanton Aargau : Bericht ueber die Forschungen 1966/67}, series = {Schweizer Beiträge zur Kulturgeschichte und Archäologie des Mittelalters}, author = {Meyer, Werner}, address = {Olten ; Freiburg i. Br. u.a.}, publisher = {Walter}, year = {1974}, note = {Simultaneously published as the 1974 yearbook of the Schweizerischer Burgenverein}, }