izlaidumi no David De Vaus

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Cover for David De Vaus · Surveys In Social Research - Social Research Today (Paperback Book) (2013)

Surveys In Social Research - Soc... (2013)

Cover for David De Vaus · Analyzing Social Science Data: 50 Key Problems in Data Analysis (Paperback Book) (2002)

Analyzing Social Science Data: 5... (2002)

Cover for David De Vaus · Research Design in Social Research (Hardcover Book) (2001)

Research Design in Social Research (2001)

Cover for David De Vaus · Research Design in Social Research (Paperback Book) (2001)

Research Design in Social Research (2001)