Marbles. Web Catalogue
Eng

  
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  1. totaliser ( totalizer ) history - an Australian Achievement - Aids to Calculation
    The invention of the world's first automatic totalizer by Sir George Julius, Mechanical Aids to Calculation - extracts of a paper presented to the Institution of Engineers Australia in 1920
    Catalogue: Historical
    Regions: North America


 
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Marbles. Web Catalogue