000 00305nam a2200121 a 4500
001 4140
005 20140414131943.0
008 090218s19uu xx 00 eng d
050 _aTR 372.7
_bL56 2006
245 _aLet's measure things. Act. Bk. 9.
440 _aLearning math with Albert
541 _eM3985
999 _c112622
_d112622