Peter Duffett-Smith
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Practical Astronomy with your Calculator
Duffett-Smith, Peter
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View 12 offers£ 5.34
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Astronomy Personal Computer 2ed
Duffett-Smith, Peter
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View 23 offers£ 6.57
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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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Astronomy with your Personal Computer
Duffett-Smith, Peter
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Practical Astronomy with your Calculator or Spreadsheet
Duffett-Smith, Peter
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View 21 offers£ 27.26
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Practical Astronomy with your Calculator
Duffett-Smith
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View 11 offers£ 6.52
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