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APA-čujuhus (7. p.)
(1987). Exercises and test papers for certificate arithmetic. Heinemann Educational publ..
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Chicago-čujuhus (17. p.)
Exercises and Test Papers for Certificate Arithmetic. London: Heinemann Educational publ., 1987.
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MLA-čujuhus (9. p.)
Exercises and Test Papers for Certificate Arithmetic. Heinemann Educational publ., 1987.
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