000			00313nam a22001337a 4500
082			_a510
100			_aL. G. Marsh
245			_aChildren Explore Mathematics / _cMARSH, L. G
250			_a2nd edition
260			_aLondon _bA & C Black _cc1968
300			_a160p.: _bill.;
500			_ainclude index
942			_cBK01
999			_c2267 _d2267