Unobtrusive Measures (SAGE Classics Book 2)
by Webb, Eugene J.- List Price: $89.00
- ISBN-10: 0761920129
- ISBN-13: 9780761920120
- Edition: 1st
- Type: Kindle Edition
- Publisher: SAGE Publications, Inc
About The Book
Thirty-five years ago, the four authors of this book addressed the problems of validity in social science research. They were interested in new and... Read more
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