000			00376nam a2200145 4500
003			OSt
008			220602b |||||||| |||| 00| 0 eng d
020			_a0521078792
082			_a510 _bSCH
245			_a The School Mathematics Project
260			_aCambridge: _bAt The University Press, _c1970.
300			_a144p.; _bill. _c23cm
650		0	_aMathematics
942			_2ddc _cLM
999			_c130784 _d130784