National Research Council (U.S.). Committee on Photochemistry & ebrary, Inc. (1938). Third report of the Committee on Photochemistry. National Research Council.

National Research Council (U.S.). Committee on Photochemistry and Inc ebrary. Third Report of the Committee on Photochemistry. Washington, D.C.: National Research Council, 1938.

National Research Council (U.S.). Committee on Photochemistry and Inc ebrary. Third Report of the Committee on Photochemistry. National Research Council, 1938.