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Start Over You searched for: Author Hydrographic Office Remove constraint Author: Hydrographic Office Publish Year Decade 1940 - 1949 Remove constraint Publish Year Decade: 1940 - 1949

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2431. Maneuvering board manual.

2436. Memorandum for aviators 12; May 22, 1941.

2439. Memorandum for aviators 5; Feb. 7, 1941.