Additional MetadataadditionalMetadata |___element 'metadata' |___element 'unitList' |___element 'unit' | \___attribute 'id' = 'numberPerHectare' | \___attribute 'name' = 'numberPerHectare' | \___attribute 'unitType' = 'arealDensity' | \___attribute 'parentSI' = 'numberPerMeterSquared' | \___attribute 'multiplierToSI' = '0.0001' | \___attribute 'abbreviation' = '/ha' |___text 'number per hectare' |