000 00297nam a2200133Ia 4500
008 160316s1950 xxu||||| |||| 00| 0 eng d
020 _a
100 _aP. Clyne
245 _aProgressive Mathematics
250 _a1st
260 _aLONDON
_bCHAPMAN &HALL LTD
_c1950
300 _a270
700 _a
_a
999 _c31971
_d31971