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“ INFORMATION RETRIEVAL ” 1961 IBM BUSINESS COMPUTER PROMO MAINFRAME PUNCHCARD COMPUTERS SM10435

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1. chrisaldrich 05 Jan 2026
  
  in Public
  
  https://www.youtube.com/watch?v=i7ydo7H_1TA Starts out with details for properly threading film projector
  
  film projection filmstrips industrial films watch
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chrisaldrich

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