Washington Education in Perspective 2006-2007 (Washington Education in Perspective)
City Profiles USA 1997
World Bank Atlas 1998 (Annual)
Statistics (Parizek, Joann, Great Math Centers.)
Nøgletal
Lønstrukturen 1978/79: Vigtigste resultater = Lohn- und Gehaltsstruktur 1978/79 : Hauptergebnisse = Structure of earnings, 1978/79
