UNIVISION: A NEW APPROACH TO CLOSED CIRCUIT TELEVISION TEACHING

Autor:	SILVERMAN, S. J.
Zdroj:	American Scientist, 1957 Jun 01. 45(3), 186A-192A.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/27826905 Zobrazit plný text záznamu