What does PNG stand for?

MLA style: "PNG." Acronym Finder . 2012. AcronymFinder.com 11 Feb. 2012 http://www.acronymfinder.com/Passive-Night-Goggles-(PNG).html
Chicago style: Acronym Finder . S.v. "PNG." Retrieved February 11 2012 from http://www.acronymfinder.com/Passive-Night-Goggles-(PNG).html
APA style: PNG. (n.d.) Acronym Finder. (2012). Retrieved February 11 2012 from http://www.acronymfinder.com/Passive-Night-Goggles-(PNG).html

Passive Night Goggles

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