<http://aims.fao.org/aos/agrovoc/xDef_b7df5df9> <http://www.w3.org/1999/02/22-rdf-syntax-ns#value> "Niobium, also known as columbium, is a chemical element with the symbol Nb (formerly Cb) and atomic number 41. "@en .
<http://aims.fao.org/aos/agrovoc/xDef_b7df5df9> <http://purl.org/dc/terms/created> "2022-01-19T17:34:40"^^<http://www.w3.org/2001/XMLSchema#dateTime> .
<http://aims.fao.org/aos/agrovoc/xDef_b7df5df9> <http://purl.org/dc/terms/source> <https://en.wikipedia.org/wiki/Niobium> .