[es] Nitrógeno--Compuestos

[ca] Compostos de nitrogen

[en] Nitrogen compounds

[fr] Azote-Composés

Nitratos

Nitritos

Óxido nítrico

Amoníaco

Nitrosamidas

Amonio

http://lemac.sgcb.mcu.es/Autoridades/LEMAC201224213/concept

http://id.loc.gov/authorities/subjects/sh85092069

http://data.bnf.fr/ark:/12148/cb12153199j

http://datos.bne.es/resource/XX4347186

http://datos.bne.es/resource/XX525774