@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/longitudinal_study_of_aging>
  skos:definition "In 1956, Congress enacted Public Law 84-652, the National Health Survey Act (NHSA), mandating development and implementation of an annual health survey of the civilian noninstitutionalized population of the United States. The NHSA called for a program of surveys to evaluate the nation's health. [Source: <a href=\"https://sk.sagepub.com/reference/aging/n161.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Health &amp; Aging; Longitudinal Study of Aging</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/studies_of_aging> ;
  skos:prefLabel "longitudinal study of aging"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/concepts>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/longitudinal_study_of_aging> .

<https://concepts.sagepub.com/social-science/concept/studies_of_aging>
  skos:prefLabel "studies of aging"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/longitudinal_study_of_aging> .