"United States." . . "Teachers colleges." . . "Teachers colleges United States." . . "Education, Secondary History United States." . . "Professeurs (enseignement secondaire) Formation États-Unis Thèses et écrits académiques." . . . . "Teachers Training of United States." . . . "The professional training of secondary teachers in the United States" . "The professional training of secondary teachers in the United States"@en . . . . . . . . . . . . "Electronic books"@en . . . . . "The professionl training of secondary teachers in the United States"@en . . . "Training of secondary teachers" . . . . . . . . . "The professional Training of secondary teachers in the United States" . . . . . . . . . . "Professional training of secondary teachers in the united states" . . . . "History"@en . "History" . . "Teachers Training of." . . "Education, Secondary." . .