An edition of The abacus: a pocket computer (1968)
The abacus: a pocket computer.
By Jesse Dilson
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Publish Date
1968
Publisher
St. Martin's Press
Language
eng
Pages
143
Description:
A clear explanation of the abacus, suggestions for practice, and instructions for making your own. Grades 6 and up.
subjects: Abacus, Abaques (mathématiques)