Christmas 2018

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Across
  1. 4. cold _____, theoretical nuclear reaction
  2. 6. artist, the school of athens
  3. 10. european river, blue _____ in song
  4. 12. sugar substitute
  5. 14. physician to 3 tudor monarchs, secondary founder of a cambrige college
  6. 15. d-day landings codename
  7. 17. cathedral domed by brunelleschi
  8. 18. wwii cipher machine
  9. 19. marie antoinette's royal house
Down
  1. 1. mural on wet plaster
  2. 2. prevented by tonic water intake
  3. 3. painter of seascapes, watercolour aesthetic
  4. 5. home of wonder woman
  5. 7. _____ house, royal college of physician's old hq
  6. 8. underground ossuaries in Paris
  7. 9. venetian _____, poisonous skin whitener
  8. 11. oldest university in europe
  9. 13. antiseptic, use pioneered by Lister
  10. 16. comics originally national allied publications
  11. 19. les mis author