HBAG

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HBAG stands for:

Harpener Bergbau AG, former German company in the energy industry, see real estate group Harpen (company)

HbAG stands for:

Handbook of German stock corporations , reference work on stock corporations in Germany

HBAg stands for:

Hepatitis B antigen, see hepatitis B
- Hepatitis B core antigen (HB virus core antigen) HBcAg
- Hepatitis B excretion antigen (HB virus extracellular antigen) HBeAg
- Hepatitis B surface antigen (HB virus surface antigen) HBsAg