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Louise H. Kidder
Holt, Rinehart and Winston, 1981
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by Claire Selltiz ... [and others]
Methuen, 1965
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Research methods in social relations
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Holt, Rinehart and Winston, 1959
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Research methods in international relations
Sage Publications Ltd., 2015
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Visual methods in social research
Sage Publications, 2001
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