Columbia subject headings:
Centro di studi pedagogici "Ernesto e Anna Maria Codignola"--Catalogs.
Codignola, Enzo, 1930---Correspondence--Catalogs.
Educators--Italy--Correspondence--Catalogs.
Harvard subject headings:
Centro di studi pedagogici "Ernesto e Anna Maria Codignola"--Catalogs.
Codignola, Enzo, 1930---Correspondence--Catalogs.
Educators--Italy--Correspondence--Catalogs.
Princeton subject headings:
Centro di studi pedagogici "Ernesto e A. Maria Codignola"--Catalogs.
Codignola, Ernesto, 1885-1965--Correspondence--Catalogs.
Educators--Italy--Correspondence--Catalogs.