Art
J-GLOBAL ID:201602014729370108   Reference number:58A0027385

Therm billing becomes routine with punched card system.

パンチカード方式によるガス会社の勘定書記入法
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Volume: 34  Issue:Page: 66, 69-71  Publication year: 1958 
JST Material Number: C0163A  CODEN: GASLA  Document type: Article
Country of issue: United Kingdom (GBR) 
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