As Sombreru Pillbox II (NRHP 88001864).jpg
National Park Service, U.S. Department of the Interior
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As Sombreru Pillbox II (NRHP 88001864), Pillboxes in Guam, Tumon, National Register of Historic Places in Guam, Extracted images
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As Sombreru Pillbox II (NRHP 88001864), National Register of Historic Places (NRHP) nomination and documentation of World War II Japanese As Sombreru Pillbox II, located in Tumon, Tamuning, Guam.
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ソンブレルピルボックスIIとして
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ソンブレルピルボックスIIとして
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