United States. Congress. Senate. Committee on Post Offices and Post Roads & ProQuest (Firm). (1940). Relating to transportation of foreign mail by aircraft. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Post Offices and Post Roads and ProQuest (Firm). Relating to Transportation of Foreign Mail by Aircraft. Washington: [publisher not identified], 1940.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Post Offices and Post Roads and ProQuest (Firm). Relating to Transportation of Foreign Mail by Aircraft. [publisher not identified], 1940.
Warning: These citations may not always be 100% accurate.