000 00265nam a22001097a 4500
020 _a9780328359004
082 _a510
_bUND
245 _aUnderstanding Subtraction:
_benvision math Topic 4
260 _bPearson Education
_c2009
300 _a81 - 116 Pages
942 _cL
999 _c23712
_d23712