GMH

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GMH stands for:

Georgsmarienhütte
Georgsmarienhütte (company) , steelworks in the town of the same name
Trade union monthly , from 1950 to 2004 the theoretical discussion body of the German trade union federation
Wholesale market hall , trading center for commercial trade
different models of the car brand Holden

gmh stands for:

Middle High German (ISO-639-3 code)