By the numbers the story of counting from the abacus to the artificial brain Lehrenbaum, Burton. creator text ctu Hartford Veeder-Root [1966] 1966 monographic eng
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electronic resource
iv, 146 p. illus. 21 cm. Illustrated by Virgil Partch. Numeration History Arithmetic QA141.2 .L4 511/.1 67003107 http://www.archive.org/details/bynumbersstoryof00lehr http://www.openlibrary.org/books/OL5528709M http://www.archive.org/details/bynumbersstoryof00lehr http://www.openlibrary.org/books/OL5528709M DLC 740502 20230525154822.0 bynumbersstoryof00lehr