Ontology of units of Measure Animal Natural History and Life History Ontology Source
http://www.owl-ontologies.com/unnamed.owl#Length_unit http://www.ontology-of-units-of-measure.org/resource/om-2/LengthUnit LOOM
http://www.owl-ontologies.com/unnamed.owl#Time_unit http://www.ontology-of-units-of-measure.org/resource/om-2/TimeUnit LOOM
http://www.owl-ontologies.com/unnamed.owl#Area_unit http://www.ontology-of-units-of-measure.org/resource/om-2/AreaUnit LOOM
http://www.owl-ontologies.com/unnamed.owl#Mass_unit http://www.ontology-of-units-of-measure.org/resource/om-2/MassUnit LOOM
http://www.owl-ontologies.com/unnamed.owl#Mass http://www.ontology-of-units-of-measure.org/resource/om-2/Mass LOOM