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J. W. B. Ruffle

7 published titles

Ratio in everyday mathematics. Part 1

1 edition

Rates of change : an introduction to calculus. Part 1

1 edition

Think decimal

1 edition

  • ISBN: 0091035503
  • Cornmarket Hutchinson
  • 1970
  • Details

Think metric

1 edition

  • ISBN: 0091035600
  • Cornmarket Hutchinson
  • 1970
  • Details

Mauritius : the to pay manuscript and handstamp markings 1860-1876

1 edition

  • Indian Ocean Study Circle
  • 1985
  • Details

Mauritius : no.4 : maritime mail 1815-1868

1 edition

  • Indian Ocean Study Circle
  • 1987
  • Details

Mauritius : no.5 : maritime mail 1815-1868

1 edition

  • Indian Ocean Study Circle
  • Details

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