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SIGMA 1 (Pupil’s edition) by David Kent and Keith Hedger. Pp 176. £3·95 1988. ISBN 0-340-39760-8 - SIGMA 1 (Teacher’s edition) Pp 78. £9·95 1988. ISBN 0-340-39758-6 - SIGMA 2 (Pupil’s edition) by Keith Hedger and David Kent. Pp 176. £4·45. 1988. ISBN 0-340-39759-4 (Hodder and Stoughton) (and a Teacher’s edition of SIGMA 2 is now available at £4·95. ISBN 0-340-48940-5)
Published online by Cambridge University Press: 01 August 2016
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- Copyright © The Mathematical Association 1989