000 00335nam a2200145Ia 4500
020 _a9780435169756
082 _bT-529
_a510
100 _a"GECKO"
245 0 _aADDITION AND SUBTRACTION TO 20
260 _b,JORDEN HILLS
_aUK
_c1999
300 _a22
944 _cTB
999 _c768298
_d768298