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Mail
Information collection method based on sending printed questionnaires to predetermined respondent addresses, which are then returned to the center by ..
PAPI (Paper and Pencil Interviewing)
Face-to-face interviews conducted using printed questionnaires between the interviewer and the respondent.
PAPI, or Paper and Pencil Interviewing, is..
Desk Research
Studies that compile analytical information typically related to a sector or previously researched topics by integrating secondary sources and literat..