_:b2711154 . _:b2711155 . _:b2711154 . _:b2711156 . "This code list provides the ContrastValue codes."@en . . _:b2711154 _:b2711155 . _:b2711155 _:b2711156 . _:b2711156 . . "The colour contrast between mottles and soil matrix. See more in Guidelines for Soil Description issued by the FAO: table 34" . "Code list for ContrastValue - codelist class"@en . .