A practical guide to behavioral research tools and techniques gan Sommer, Barbara Baker 1938-

Basic content analysis gan Weber, Robert Philip

Practical sampling gan Henry, Gary T.

Qualitative evaluation and research methods gan Patton, Michael Quinn

Research methods gan McNeill, Patrick

Basic content analysis gan Weber, Robert Philip

Research methods gan McNeill, Patrick

Qualitative evaluation and research methods gan Patton, Michael Quinn

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Qualitative evaluation and research methods gan Patton, Michael Quinn

Qualitative evaluation and research methods gan Patton, Michael Quinn