Ledgers as computational formula

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Ledgers were the primary computational forms for economic, statistical
and financial reckoning until well into the 1970s.

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Robin Boast

2015-03-04 19:33:15 +01:00

parent 171d96db63

commit 5114955252

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13 column ledger paper.jpg

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ledger of slave picked cotton_1840-1860.jpg

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ledgers.jpg

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