The abbreviation HDA or HdA called:

  • The ICAO code of the Chinese airline Dragonair
  • Concise Dictionary of German superstition
  • Handbook of Classical Studies
  • Hero of Labour
  • House of Architecture (Graz), Center for Architecture
  • House of Architecture in Cologne, Center for Architecture
  • House of Architecture (Munich ), the seat of the Bavarian Chamber of Architects
  • House of Architects in Dusseldorf, seat of the Chamber of Architects North Rhine -Westphalia
  • House of Astronomy in Heidelberg on the campus of the Max Planck Institute for Astronomy
  • Head Disc Assembly
  • Helicase - Dependent Amplification ( helicase- dependent amplification)
  • Hidden Falls ( USA )
  • High Definition Audio
  • Hochschuldidaktische job
  • Hochschule Darmstadt
  • Humanization of working life, research and implementation program of the former BMFT and BMA in the 1970s and 1980s, was then continued under " Work and Technology ".
  • Hot-wire anemometry
  • Disambiguation
  • Abbreviation