États-Unis. Education. National center for educational statistics (Office)
États-Unis. Department of education. National center for education statistics
Etats-Unis. Department of health, education and welfare. Education division. National center for education statistics
Fait suite à la : "Division of Educational Statistics of the Bureau of Educational Research and Development" aboli le 1er janvier 1965. - En 1976 , changement de nom : le "National center for educational statistics" devient le "National center for education statistics"
Etats-Unis. Center for education statistics
Etats-Unis. Department of health, education and welfare. National center for education statistics
National center for education statistics. États-Unis
NCES
États-Unis. National center for educational statistics
Comparative indicators of education in the United States and other G8 countries 2002, 2003. - . - LC Authorities : National Center for Educational Statistics. - http://authorities.loc.gov. - 2015-05-06
États-Unis. Department of education. Institute of education sciences. National center for education statistics
National center for educational statistics. États-Unis
Institute of education sciences. National center for education statistics. États-Unis
Etats-Unis. Office of education. National center for educational statistics
États-Unis. National center for education statistics
Etats-Unis. Office of educational research and improvement. National center for education statistics