Research portals for the historical sciences

PICTURE CREDITS: Header: BSB / H.-R.Schulz | historicumSEARCH: BSB / Cod.icon. 133 | German Historical Bibliography: BSB / H.-R. Schulz | First World War: BSB / Bildarchiv | GNTUsearch: Deutsches Museum | Review platforms of recensio.net: BSB / W. Herr | Internet offers: BSB / W. Herr | Further research tools: BSB / H.-R. Schulz