• 8546 - Bijvoet - February 1972 (est)
  • 8547 - Schildmeijer - February 1972 (est)
  • 8548 - Moorman - February 1972 (est)
  • 8549 - Nak - February 1972 (est)
  • 8550 - Cort - February 1972 (est)
  • 8551 - Oudshoorn - February 1972 (est)
  • 8552 - van der Meer - February 1972 (est)
  • 8553 - Lambo - February 1972 (est)
  • 8554 - van der Hoek, A. - February 1972 (est)
  • 8555 - Leuverink - February 1972 (est)
  • 8556 - Schür - February 1972 (est)
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