"SECONDARY EDUCATION." . . "SCHOOLS." . . "TEXTBOOKS." . . . . . . "United Nations for the classroom: a text-book for secondary schools technical colleges and colleges of further education"@en . . . . . . . . "United Nations for the classroom a text-book for secondary schools in the United Nations and its work" . . "United Nations for the classroom : a text-book for secondary schools on the United Nations and its work by"@en . "United Nations for the classroom : a textbook for secondary schools on the United Nations and its work" . . . . . . . . "United Nations for the classroom : a textbook for secondary schools, technical colleges and colleges of further education"@en . . "United Nations for the Classroom, etc. (Second edition.)"@en . "United Nations for the Classroom, etc. (Second edition.)" . "United Nations for the classroom : a text-book for secondary schools on the United Nations and its work" . . . "United Nations for the classroom"@en . . . "United Nations for the Classroom. A text-book for Secondary schools on the United Nations and its work, etc. [With illustrations.]"@en . "United Nations for the Classroom. A text-book for Secondary schools on the United Nations and its work, etc. [With illustrations.]" . . . "United Nations for the classroom; a text-book for secondary schools on the United Nations and its work"@en . . "United Nations for the classroom; a text-book for secondary schools in the United Nations and its work" . . . "INTERNATIONAL EDUCATION." . . . . "EDUCATION." . . "UNIVERSITIES AND COLLEGES." . . "Davis, E.T." . . "UN." . .