Research methods in the social sciences
edited, Bridget Somekh, Cathy Lewin
Sage Publications , 2005
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Berg, Bruce Lawrence, 1954-
Qualitative research methods for the social sciences
Pearson, 2004
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The behavioral and social sciences survey
Prentice-Hall, 1970
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School of comparative social sciences
[T.t.] [t.p.] 1975
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Labovitz, Sanford
Introduction to social research
McGraw-Hill, 1971
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