000 00307nam a2200121 a 4500
001 4140
005 20140414131946.0
008 090218s19uu xx 00 eng d
050 _aTR 372.7
_bW55 2006
245 _aWhat are numbers? (0 to 5). Lev. 3.
440 _aLearning math with Albert
541 _eM4054
999 _c112677
_d112677