What follows is an opinion from a United States Court of Appeals. Your task is to identify the federal agency (if any) whose decision was reviewed by the court of appeals. If there was no prior agency action, choose "not applicable".

Opinion:
R. E. OLSEN et al., Appellants, v. POTLATCH FORESTS, Inc., et al., Appellees.
No. 13155.
United States Court of Appeals Ninth Circuit.
Jan. 6, 1953.
William S. Hawkins and E. L. Miller, Coeur d’Alene, Idaho, for appellants.
Clarence J. Young and Frank C. Mc-Colloch, Portland, Or., Elder, Elder & Smith, R. N. Elder, Coeur d’Alene, Idaho, William A. Babcock, Jr., Portland, Or., for appellees.
Before MATHEWS, HEALY and POPE, Circuit Judges.
PER CURIAM.
On the grounds and for the reasons stated in its opinion Potlatch Forests, Inc., v. International Woodworkers of America, D. C.Idaho, 108 F.Supp. 906, the judgment of the District Court is affirmed.

Question: What federal agency's decision was reviewed by the court of appeals?

Choices:
Benefits Review Board
Civil Aeronautics Board
Civil Service Commission
Federal Communications Commission
Federal Energy Regulatory Commission
Federal Power Commission
Federal Maritime Commission
Federal Trade Commission
Interstate Commerce Commission
National Labor Relations Board
Atomic Energy Commission
Nuclear Regulatory Commission
Securities & Exchange Commission
Other federal agency
Not ascertained or not applicable

Answer: 14