"Guidelines for Soil Description issued by the FAO: table 26"@en . _:b15497 . _:b15497 . _:b15498 . _:b17378 . _:b16228 . _:b16228 . _:b15498 . _:b16228 . _:b15766 . _:b15498 . _:b17812 _:b16329 . . _:b15766 . _:b15766 _:b17812 . _:b15766 . _:b17378 . _:b15497 . _:b15497 . _:b16329 . _:b16228 . _:b15498 . _:b16329 _:b17378 . . "RockAbundance"@en .