| http://www.w3.org/ns/prov#value | - As a result, for some layers, material type descriptions in tables TST_L05B and TST_L05A do not have exact corresponding material type descriptions in tables INV_LAYER, RHB_LAYER, and SPS*_LAYER. There are no established reference criteria that could be used to determine whether material types in the above tables are similar or significantly different.
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