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View How to Measure Survey Reliability and Validity (Survey Kit, Vol 7) By Mark S. Litwin 
How to Measure Survey Reliability and Validity (Survey Kit, Vol 7)
By Mark S. Litwin
View Survey sampling and measurement By Symposium on Survey Sampling University of North Carolina 1977. 
Survey sampling and measurement
By Symposium on Survey Sampling University of North Carolina 1977.