Shipment of samples and advertising matter abroad including the use of parcel post in foreign trade,
by Roberta P. Wakefield, senior research assistant, and Henry Chalmers, chief, Division of foreign tariffs.

APA Citation

Wakefield, R. P., Chalmers, H. (1929). Shipment of samples and advertising matter abroad including the use of parcel post in foreign trade. Washington: U.S. Govt. Print. Off..

MLA Citation

Wakefield, Robbie P., 1879-, and Henry Chalmers. Shipment of Samples And Advertising Matter Abroad Including the Use of Parcel Post In Foreign Trade. Washington: U.S. Govt. Print. Off., 1929.

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