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Keywords from Image Description:
AMHNA Map and elevations of batteries at Fort Oostenburg at Trinconomale. Artwork nl Plattegrond en profielen van batterijen van fort Oostenburg te Trinconomale nl Titel catalogus Leupe NA Plan en profils van eenige batteryen en derzelver souterreins Notities verso Blauw etiket ODG nr Plan profils behorende tot Oostenburg en According