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Study guide and reference material for commercial radio operator examinations.

APA Citation

United States. Federal Communications Commission. Study guide and reference material for commercial radio operator examinations. Washington: U.S. Govt. Print. Off.

MLA Citation

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

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