Mixed Bag

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Across
  1. 3. Motown group, 'Martha and the ...'
  2. 6. German city home to the 'Shrine of Charlemagne'
  3. 8. US President's official helicopter, '... One'
  4. 9. Author of All Quiet on the Western Front, 'Erich Maria ...'
  5. 11. Cohen Brothers crime film starring Steve Buscemi & Frances McDormand
  6. 12. Prison in Porridge & 70s English rock band, 'HMP ...'
Down
  1. 1. Scorer of the winning drop-goal in the 2003 Rugby Union World Cup final, 'Jonny ...'
  2. 2. Tony Robinson character in Blackadder
  3. 4. Type of singing voice & fictional mob family surname
  4. 5. Former home ground of Leicester City Football Club, '... Street'
  5. 7. Fictional desert planet in Frank Herbert's Dune novels
  6. 10. Major river flowing through Phnom Penh