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Herman Holterarendas välja tabelimismasina, mis kasutas õpetamiseks perfokaarte. Holteri aparaati kasutati inimeste loendamiseks Ameerika Ühendriikide rahvaloenduse jaoks. (1 Jan 1906 Jahr – 1 Apr 1906 Jahr)

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1 Jan 1906 Jahr
1 Apr 1906 Jahr
~ 3 months
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