000 003500000a22001450004500
080 _a51
_bG6
100 _aGolding, E.W.
245 _aElementary practical mathematics
250 _a2nd ed.
260 _aLondon
_bPitman
_c1946
300 _a3v.
500 _a000950-v.1, 000789,000949,000951-v.2, 000792-v.3
700 _aGreen, H.G.
942 _cBK
999 _c53038
_d53038