What does IGS stand for?

MLA style: "IGS." Acronym Finder . 2012. AcronymFinder.com 30 May. 2012 http://www.acronymfinder.com/Improved-Guidance-System-(IGS).html
Chicago style: Acronym Finder . S.v. "IGS." Retrieved May 30 2012 from http://www.acronymfinder.com/Improved-Guidance-System-(IGS).html
APA style: IGS. (n.d.) Acronym Finder. (2012). Retrieved May 30 2012 from http://www.acronymfinder.com/Improved-Guidance-System-(IGS).html

Improved Guidance System

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

Military and Government

Other Resources:

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Improved Guardrail V - Integrated Processing Facility Izba Gospodarcza Reklamy Zewnetrznej (Polish: Chamber of Commerce Foreign Ads: Warsaw, Poland) IBM Global Services (IBM consulting organization) Idaho Gourd Society Identify Graphic Subrepertoire (ITU-T) IGES (Initial Graphics Exchange Specification) Format (file extension) Image-Guided Surgery Imagery & Geospatial Support (NIMA) Imerslund-Grasbeck Syndrome Improved Gray Scale		Inacom Government Systems, Inc. Indiana Geological Survey (Bloomington, IN) Indiana Gourd Society Inert Gas System (tankers) Inertial Guidance System Informatics Graduate School (UK) Information Gas Station (Helsinki, Finland) Information Gathering Satellite (Japan) Information Generation System Inner Glide Slope

Samples in periodicals archive:

Yes, we did work on improved guidance systems, but late in 1944 we were convinced that the war would be over before new systems could be used on military rockets.

NASA pioneer Ernst Stuhlinger dies at 94