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Pneumatic mail tube systems :
Hearing before the Committee on the Post Office an Post Roads, House of Representatives, Seventy-sixth Congress, first session, Friday, February 24, 1939.

APA Citation

United States. Congress. House. Committee on Post Office and Post Roads. (1939). Pneumatic mail tube systems: Hearing before the Committee on the Post Office an Post Roads, House of Representatives, Seventy-sixth Congress, first session, Friday, February 24, 1939. Washington: U.S. G.P.O..

MLA Citation

United States. Congress. House. Committee on Post Office and Post Roads. Pneumatic Mail Tube Systems: Hearing Before the Committee On the Post Office an Post Roads, House of Representatives, Seventy-sixth Congress, First Session, Friday, February 24, 1939. Washington: U.S. G.P.O., 1939.

Warning: These citations may not always be complete (especially for serials).

Pneumatic mail tube systems : Hearing before the Committee on the Post Office an Post Roads, House of Representatives, Seventy-sixth Congress, first session, Friday, February 24, 1939.

APA Citation

MLA Citation

Pneumatic mail tube systems :
Hearing before the Committee on the Post Office an Post Roads, House of Representatives, Seventy-sixth Congress, first session, Friday, February 24, 1939.