Smith, E. (1987). Examples in mathematics for GCSE: Higher level. Stanley Thornes.
Dyfyniad Arddull ChicagoSmith, Ewart. Examples in Mathematics for GCSE: Higher Level. Cheltenhorn, England: Stanley Thornes, 1987.
Dyfyniad MLASmith, Ewart. Examples in Mathematics for GCSE: Higher Level. Stanley Thornes, 1987.
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