SIGMA: Tchrs' Bk. 1
by Keith Hedger, David Kent
ISBN 13: 9780340397589
Format: Paperback (78 pages) Publisher: Hodder Arnold H&S Published: 01 Jun 1988 Other Format: Paperback
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SIGMA: Bk. 2
ISBN 13: 9780340397596
Format: Paperback (176 pages) Publisher: Hodder Arnold H&S Published: 01 Sep 1988
Sigma 1: Investigating Mathematics
ISBN 13: 9780340397602
Format: Paperback (176 pages) Publisher: Hodder Arnold H&S Published: 01 Jun 1988