Electronic and mechanical printing calculator course /
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Cincinnati :
South-Western,
c1974.
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| Subjects: |
| Physical Description: | vi, 122 p. : ill., forms ; 27 cm.+ 8 tests. |
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| ISBN: | 0538135107 0538135131 (tests) |