防空洞
防空洞係一種防避空襲嘅軍事掩體。
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編輯- Morrison shelter - follow previous/next page indicators
- Anderson shelter
- Development of the Anderson shelter
- Railway arches 2
- Hochbunker Click on left frame 2 3
- Berlin Air-raid Shelters (Hochbunker), Flak Towers and Bunkers
- Clifford Road Air Raid Shelter Museum, Ipswich, UK
- Archives of the German military manuals