WALSH C E. (1979). WORKED EXAMPLE A LEVEL PURE MATHS. CELTIC REVISION AIDS.
Chicago-čujuhus (17. p.)WALSH C E. WORKED EXAMPLE A LEVEL PURE MATHS. LONDON: CELTIC REVISION AIDS, 1979.
MLA-čujuhus (9. p.)WALSH C E. WORKED EXAMPLE A LEVEL PURE MATHS. CELTIC REVISION AIDS, 1979.
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