ARE WE ALONE IN THE UNIVERSE?: Using primary sources to address a fundamental question

Autor:	Waring, Scott M., Herlihy, Christine
Zdroj:	The Science Teacher, 2015 Oct 01. 82(7), 63-66.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/43683314 Zobrazit plný text záznamu