Poisson sampling [microform] : the adjusted and unadjusted estimator revisited / Michael S. Williams, Hans T. Schreuder, Gerardo H. Terrazas (Research note RMRS ; RN-4)
Poisson sampling [microform] : the adjusted and unadjusted estimator revisited / Michael S. Williams, Hans T. Schreuder, Gerardo H. Terrazas