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Study guide and reference material for commercial radio operator examinations.
July 1, 1939.

APA Citation

United States. Federal Communications Commission. (1939). Study guide and reference material for commercial radio operator examinations: July 1, 1939. Washington: U.S. Govt. Print. Off..

MLA Citation

United States. Federal Communications Commission. Study Guide And Reference Material for Commercial Radio Operator Examinations: July 1, 1939. Washington: U.S. Govt. Print. Off., 1939.

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

Study guide and reference material for commercial radio operator examinations. July 1, 1939.

APA Citation

MLA Citation

Study guide and reference material for commercial radio operator examinations.
July 1, 1939.