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Neptunium2.jpg(306 × 238 pixels, file size: 15 KB, MIME type: image/jpeg)
English: neptunium 237 sphere (6 kg)
Date 2002
Author Los Alamos National Laboratory,
( Reusing this file)
Public domain This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. See Copyright.

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