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This lecture focuses on the methods of conducting housing surveys, specifically on the interview method. It covers three types of interviews: non-directive, directive, and semi-directive, emphasizing the importance of the initial phase of the interview, the use of interview grids, and various techniques for engaging interviewees. The lecture also discusses the significance of ethnographic interviews, which go beyond verbal responses to include observations of the interviewee's surroundings. Practical advice is given on how to conduct effective interviews and the importance of documenting both verbal and non-verbal cues for a comprehensive understanding of the interviewee's living environment.