_:b15729 . "Clay"@en . "ISRIC Report 2019/01: Tier 1 and Tier 2 data in the context of the federated Global Soil Information System. Appendix 3"@en . . _:b16317 . _:b15728 . _:b17800 _:b16317 . . _:b15730 . _:b15728 _:b17800 . _:b15729 . _:b15730 . _:b16317 _:b17366 . _:b17366 . _:b15729 . _:b15730 . _:b15728 . _:b15728 . _:b15729 . _:b15730 . _:b17366 .