00751nam0-22002891i-450-9900025378104033210471540455000253781FED01000253781(Aleph)000253781FED0100025378120000920d1992----km-y0itay50------baENGSamplingSteven K. Thompson.New YorkJohn Wiley1992.XV, 343 p.24 cmPianificazioni di indagini, Campionamento519Thompson,Steven K.103519ITUNINARICAUNIMARCBK990002537810403321XV-B-272453MASMASSampling65273UNINAING01