method or standard: SHA-1 described at URL: https://chandra.si.edu/photo/1999/casajph URL: https://chandra.si.edu/photo/1999/casajph/casajph_hand.pdf...
English Chandra X-ray image of the supernovas remnant Cassiopeia A (Cas A). determination method or standard: work of the federal government of the United...
English Chandra X-ray image of the supernovas remnant Cassiopeia A (Cas A). determination method or standard: work of the federal government of the United...
English Chandra X-ray image of the supernovas remnant Cassiopeia A (Cas A). determination method: work of the federal government of the United States...
English Chandra X-ray image of the supernovas remnant Cassiopeia A (Cas A). determination method or standard: work of the federal government of the United...
.jpg){kind=link}
.jpg){kind=link}