The abacus: its history, its design, its possibilities in the modern world
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| Hovedforfatter: | |
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| Format: | Bog |
| Sprog: | English |
| Udgivet: |
New York,
Gordon and Breach Science Publishers
[1971]
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| Fag: |
| Fysisk beskrivelse: | vii, 179 p. illus. 24 cm. |
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| Bibliografi: | Includes bibliographical references. |
| ISBN: | 0677019602 0677019653 (pbk.) |