URI: https://soilwise-he.github.io/soil-health#Nickel
https://soilwise-he.github.io/soil-health#Nickel
commonly regulated heavy metals
monitored heavy metals
http://www.eionet.europa.eu/gemet/concept/5589
http://aims.fao.org/aos/agrovoc/c_5172
http://opendata.inrae.fr/thesaurusINRAE/c_727
Ni