What does PGS stand for?

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

Patterned Ground-Shield

This definition appears very rarely and is found in the following Acronym Finder categories:

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