_:b10722 . _:b10720 . . _:b10720 . _:b10721 . _:b10722 . _:b10722 . _:b10720 . _:b10721 . _:b10722 . _:b10720 . "ISRIC Report 2019/01: Tier 1 and Tier 2 data in the context of the federated Global Soil Information System. Appendix 3"@en . . "SulfurExtractableElements"@en . _:b10721 . _:b10721 .