Autor
American Educational Research Association
1
EASI (Organization)
1
Freeman, Frank N. 1880-1961
1
Fundación Social (Colombia)
1
Higher Education Academy (Great Britain). Engineering Subject Centre
1
Instituto de Investigaciones Pediátricas (Venezuela)
1
LTSN Subject Centre for Art, Design & Communication
1
Morrison, J. Cayce 1886-1973
1
National Association of Secondary School Principals (U.S.)
1
National Institute of Environmental Health Sciences
1
Scates, Douglas E. 1898-1967
1
Sociedad Venezolana de Puericultura y Pediatría
1
Texas Tech University. Dept. of Mathematics
1
United States. Bureau of Labor Statistics
1
Universidad de los Andes (Bogotá, Colombia). Facultad de Ciencias Sociales
1