Peter Duffett-Smith
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Practical Astronomy with your Calculator
Duffett-Smith, Peter
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Astronomy with your Personal Computer (Volume 0)
Duffett-Smith, Peter
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Practical Astronomy with your Calculator
Peter Duffett-Smith
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View 11 offersUS$ 8.50
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Easy PC Astronomy with floppy disk
Duffett-Smith, Peter
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Astronomy with your Personal Computer
Duffett-Smith, Peter
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Practical Astronomy with your Calculator or Spreadsheet
Duffett-Smith, Peter; Zwart, Jonathan
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View 21 offersUS$ 35.54
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Astronomy With Your Personal Computer
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View 2 offersUS$ 20.21
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