@techreport{15bae2a654e34b25915bad759908212d,
title = "Clustering occupational classes by educational structure",
author = "{de Grip}, A. and L.M.J. Groot and J.A.M. Heijke",
year = "1987",
month = jan,
day = "1",
doi = "10.26481/umarow.198702E",
language = "English",
series = "ROA Working Papers",
publisher = "Researchcentrum voor Onderwijs en Arbeidsmarkt, Faculteit der Economische Wetenschappen",
number = "2E",
type = "WorkingPaper",
institution = "Researchcentrum voor Onderwijs en Arbeidsmarkt, Faculteit der Economische Wetenschappen",
}