000 00324 a2200121 4500
082 _a372.73
_bDAC
100 _aDavies, P. G.
_956821
245 _aChallenge mathematics
_b: the metric system book 3
_cP. G. Davies
260 _aLondon:
_bHamish Hamilton,
_c1964.
300 _a95p.
650 _aMathematics
_960768
942 _cBK
999 _c52317
_d52317