Gertrud Koch

Identifiers

  • Open LibraryOL4841649A

Top Subjects

  • Patent laws and legislation (1)
  • Inventions (1)
  • Germany, intellectual life (1)
  • Motion pictures (1)
  • Philosophy (1)
  • Artists, germany (1)
  • Art, german (1)

Books by Gertrud Koch

Total count: 11