000 00406nam a22001697a 4500
999 _c990
_d990
008 200106b ||||| |||| 00| 0 eng d
082 0 0 _a510
_bT644
100 _aToft, Louis.
_9120
245 1 0 _aPractical mathematics
_cby Louis Toft
250 _a3rd
260 _aLondon
_bPitman
_c1951
300 _avii,504p.
365 _d11.04
650 0 _aMathematics
700 _9552
_aMcKay, A. D. D.
942 _cBK