000 00496nam a2200157 a 4500
041 _aeng
082 _a311
_bW45i57
100 _aWilson, E. Bright
245 _aAn introduction to scientific research
260 _aNew York
_bMcGraw-Hill Book Company
_c1952
300 _a373 p
650 _aESTADISTICA
650 _aINVESTIGACIONES CIENTIFICAS
942 _cBK
999 _c1466
_d1466