Columbia subject headings:
Aeronautics--Law and legislation.
International Conference on Private Law Affecting Air Questions (3d : 1933 : Rome)
Harvard subject headings:
Aeronautics--Law and legislation
International Conference on Private Law Affecting Air Questions (3rd : 1933 : Rome)
Princeton subject headings:
Aeronautics--Law and legislation.
International Conference on Private Law Affecting Air Questions (3rd : 1933 : Rome, Italy)