Invalid expression:s[ck]%h%oh%p[fp]f%h%[uv]h%n{1
Brockhaus-1911: Conditio
Eisler-1904: Conditio sine qua non
Herder-1854: Conditio
Kirchner-Michaelis-1907: Conditio sine qua non
Meyers-1905: Conditio