Abacus :4: Challenge Book: Challenge Book Year 4 (ABACUS - ORIGINAL (1996))
by Ruth Merttens, David Kirkby
ISBN 13: 9780602275877
Format: Paperback (80 pages) Publisher: Ginn Published: 04 Apr 1997
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Abacus Year 2 Workbook 2 (Abacus 2013)
by Ruth Merttens
ISBN 13: 9781408278451
Format: Paperback (64 pages) Publisher: Pearson Education Published: 13 Dec 2013
Abacus Evolve Y1/P2: Workbook 2 Pack of 8 Framework Edition (Abacus Evolve Fwk (2007))
ISBN 13: 9780602574994
Format: Paperback Publisher: Ginn Published: 05 Jul 2007
Mastery Checkpoints (Abacus 2013)
ISBN 13: 9781292277325
Format: Paperback (98 pages) Publisher: Pearson Education Published: 18 Dec 2018