Invalid expression:w[i�y][eh]% l{1
Brockhaus-1837: Steffens
Brockhaus-1911: Steffens
DamenConvLex-1834: Steffens, Heinrich
Herder-1854: Steffens
Meyers-1905: Steffens
Pataky-1898: Steffens, Clara Emma
Pierer-1857: Steffens