The sample survey: theory and practice [by] Donald P. Warwick [and] Charles A. Lininger. Warwick, Donald P. Lininger, Charles A. (Charles Andrew), 1923- joint author. Social surveys. Social sciences Research. Interviewing. Questionnaires. HN29 .W394 311.2 20 WAS Bibliography: p. 327-333. New York, McGraw-Hill [1975] [1975] 1975 Text viii, 344 p. eng