4  results:
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1

The abacus 

its history, its design, its possibilities in the modern wo... 
Moon, Parry , c 1971
Copies:  Zentrale:E02 a mat 766/565
 
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2

The Japanese abacus. Its use and theory:

Kojima, Takashi - 22. print . , 1967
Copies:  Zentrale:E02 a mat 766/776
 
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4

The Japanese abacus explained 

Dover books explainig science
Copies:  Zentrale:E02 a mat 766/724
 
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