ボアチャンバーポケットMining tables : being a comparison of the units of weight, measure, currency, mining area etc., of different countries; together with tables, constants & other data useful to mining engineers and surveyors

ボアチャンバーポケットMining tables : being a comparison of the units of weight, measure, currency, mining area etc., of different countries; together with tables, constants & other data useful to mining engineers and surveyors

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  • ボアチャンバーポケットMining tables : being a comparison of the units of weight, measure, currency, mining area etc., of different countries; together with tables, constants & other data useful to mining engineers and surveyors
  • Computers & Technology ボアチャンバーポケットMining tables : being a comparison of the units of weight, measure, currency, mining area etc., of different countries; together with tables, constants & other data useful to mining engineers and surveyors