Sheppeard, C. J., & Shepperd, J. A. H. (1984). Pure mathematics for advanced level.
Chicago Edition CitationSheppeard, C J., i J A H. Shepperd. Pure Mathematics for Advanced Level. London, Hodder & Stoughton, 1984.
Cita MLASheppeard, C J., i J A H. Shepperd. Pure Mathematics for Advanced Level. 1984.
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