PropertyValue
nif:beginIndex
  • 0 (xsd:integer)
nif:broaderContext
nif:endIndex
  • 139 (xsd:integer)
nif:isString
  • The sample was stratified for age according to the following four age-categories: 7–12 months; 13–24 months; 25–36 months and 37–48 months.
rdf:type