Henkin, D. M. (2006). The postal age: The emergence of modern communications in nineteenth-century America. Chicago: The University of Chicago Press.
Παραπομπή Chicago StyleHenkin, David M. The Postal Age: The Emergence of Modern Communications in Nineteenth-century America. Chicago: The University of Chicago Press, 2006.
Παραπομπή MLAHenkin, David M. The Postal Age: The Emergence of Modern Communications in Nineteenth-century America. Chicago: The University of Chicago Press, 2006.
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