_:b15956 . "ISRIC Report 2019/01: Tier 1 and Tier 2 data in the context of the federated Global Soil Information System. Appendix 3"@en . . _:b15956 . "SulfurTotalElements"@en . _:b15956 . . _:b15957 . _:b15957 . _:b15955 . _:b15955 . _:b15956 . _:b15955 . _:b15957 . _:b15955 . _:b15957 .