. . . "Sampling Size Unit"@en . "A sampleSizeUnit must have a corresponding sampleSizeValue, e.g., \"5\" for sampleSizeValue with \"metre\" for sampleSizeUnit. Examples: \"minute\", \"hour\", \"day\", \"metre\", \"square metre\", \"cubic metre\". Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI (e.g., minute, hour, day, litre)."@en . "2014-11-07" . "recommended" . . "The unit of measurement of the size (time duration, length, area, or volume) of a sample in a sampling event."@en . . "not in ABCD" . "2015-03-19" .