000 00538nam a2200181 a 4500
005 20140412111344.0
008 041005s19uu xx 00 eng d
020 _a0-04-446709-0
050 _aTR(GS 513.2'12
_bM95 1997
100 _aMurphy, Stuart
245 _aElevator magic /
_cStuart Murphy.
260 _aNew york :
_bHarper collins,
_c1997.
300 _a32
440 _aMathstart
520 _aExplains the concept of subtraction through a rhyming text about a descending elevator
650 _aSubtaction
999 _c105197
_d105197