Parten, Milfred. (1950). Surveys, polls and samples : practical procedures / by Mildred Parten. New York :: Harper & Brothers,.
Parten, Milfred. Surveys, polls and samples : practical procedures / by Mildred Parten. New York :: Harper & Brothers,, 1950
Parten, Milfred. Surveys, polls and samples : practical procedures / by Mildred Parten. New York :: Harper & Brothers,, 1950.