[es] Guerra mundial, 1914-1918--Campañas--Frente occidental

[ca] Guerra Mundial I, 1914-1918-Campanyes-Front Occidental

[en] World War, 1914-1918-Campaigns-Western Front

[fr] Guerre mondiale (1914-1918)-Campagnes et batailles-Front occidental

http://data.bnf.fr/ark:/12148/cb120773937

http://id.loc.gov/authorities/subjects/sh85148258

http://lemac.sgcb.mcu.es/Autoridades/LEMAC201237097/concept

http://datos.bne.es/resource/

http://datos.bne.es/resource/XX527831

http://datos.bne.es/resource/XX5492135