Trałowce typu Bluebird (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Trałowce typu Bluebird" in Polish language version.

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Edward J. Marolda: The U.S. Navy in the Korean War. Naval Institute Press, 2007, s. 356. ISBN 1-59114-487-6. Cytat: Orders for the similar coastal Bluebird class eventually totaled twenty-two ships for the U.S. Navy and 267 for NATO navies. (ang.).