000 00271nam a2200121 4500
082 _a370
_bBRU.U
084 _2Colon Classification
100 _aBrueckner
245 _aUsing number ideas /
_cby Brueckner
260 _bHolt,
_c1960.
300 _a442p. :
942 _cBK
999 _c684124
_d684124