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" M shown in the operation. 2. 5 compositors, in 16 days, of 14 hours each, can compose 20 sheets of 24 pages in each sheet, 50 lines in a page, and 40 letters in a line ; in how many days, of 7 hours each, will 10 compositors compose a volume to be printed... "
Arithmetic - Σελίδα 57
των Nelson, Thomas & sons, publisher - 1876 - 104 σελίδες
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