"This code list provides the SurfaceAgeValue."@en . _:b11642 _:b11643 . _:b11650 _:b11651 . _:b11643 _:b11644 . _:b11651 _:b11652 . _:b11651 . _:b11647 . _:b11641 _:b11642 . _:b11646 . _:b11654 . . _:b11652 _:b11653 . "Code list for SurfaceAgeValue - codelist class"@en . _:b11653 _:b11654 . _:b11641 . _:b11647 _:b11648 . _:b11646 _:b11647 . "Guidelines for Soil Description issued by the FAO: table 13" . _:b11652 . _:b11641 . _:b11648 . . _:b11654 . _:b11642 . _:b11650 . _:b11649 _:b11650 . _:b11643 . _:b11644 _:b11645 . _:b11645 . . _:b11645 _:b11646 . _:b11644 . _:b11648 _:b11649 . _:b11649 . _:b11653 .