International Ice Observation and Ice Patrol Service in the North Atlantic Ocean. Season of 1929
(1930). International Ice Observation and Ice Patrol Service in the North Atlantic Ocean. Season of 1929. Bulletin. U.S. Treasury Departement. United States Coast Guard, 18. United States Government Printing Office: Washington D.C. 141 pp.
Deel van: Bulletin. U.S. Treasury Departement. United States Coast Guard. Government Printing Office: Washington, meer
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