000 002710000a22001330004500
245 _aStatistics
100 _aHarper, W.M.
250 _a2d. ed.
260 _aLondon
_bMacdonald & Evans
_c1971
300 _a330 p.
080 _a311
_bH3
041 _aEN
942 _cBK
999 _c96914
_d96914