000 00575nam a2200205Ia 4500
003 NUNS
005 20250708101949.0
008 220907s9999 xx 000 0 und d
020 _a9780863158643
040 _cNUNSLRC
082 _aCIR 513 H474 2012
100 _aHeld, Wolfgang
245 4 _aThe quality of numbers 1 to 31 /
_cWolfgang Held
260 _aEdinburgh:
_bFloris Books,
_cc2012.
300 _a141 pages :
_billustrations ;
_c20 cm.
504 _aIncludes bibliography.
650 _aArithmetic
_xStudy and teaching.
942 _cBK
_2ddc
_n0
999 _c6836
_d6836