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German Submarine War Zone Announced 1 February 1917
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German Submarine War Zone Announced 1 February 1917

Map showing unlimited submarine warfare zone announced by Germany on 1 February 1917.

Date
1920
Mapmaker / publisher
artist not identified
Archive
Wikimedia Commons
Type
map
Original size
645 × 900 pixels

Public domainsafest

Reason: its US copyright has expired (published before 1931).

Read from: Commons licence category: PD US expired; no CC BY, CC BY-SA, GFDL or deletion tag on the file page.

Credit line

"German Submarine War Zone Announced 1 February 1917" (1920). artist not identified, via Wikimedia Commons. Public domain. https://commons.wikimedia.org/wiki/File:German_Submarine_War_Zone_Announced_1_February_1917.jpeg

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