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हारमन होलोरिथ ने पंच कार्ड का आविष्कार कब किया था?

Asked Jul 23, 2023 Modified Jul 23, 2023 Viewed 0 times
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Technology
asked Jul 23, 2023 at 19:06
B
Brijesh Patel
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सन् 1880 में किया था।
answered Jul 23, 2023 at 19:06
B
Brijesh Patel

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