Subtraction shields. (Q193231)
published work from 1979
Language | Label | Description | Also known as |
---|---|---|---|
English | Subtraction shields. |
published work from 1979 |
Statements
RE033683
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1979
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Subtraction shields.
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Catherine Stern.
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AA195995
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13Sep79
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21Sep51
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Toni S. Gould & Fritz Stern (C)
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C
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NM: text & ill.
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Structural arithmetic
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