00440nam a2200169 a 4500 20140412111242.0 010904s19uu xx 00 eng d 1-85758-845-2 TR(GS 372.7 H462 1998 Hegarty, John Mental maths, ages 6-7 / John Hegarty. London : Letts Educational, 1998. 32 p. Letts Mathematics 102770 102770 0 0 0 0 EL EL TR 2001-09-04 Donation 199.00 0 TR(GS 372.7 H462 1998 E2730 2014-04-12 00:00:00 2014-04-12 BK