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2. Ecological Psychology: Concepts and Methods for Studying the Environment of Human Behavior;Barker,1968
3. Behavioral and Social Sciences Survey Committee. 1969. The Behavioral and Social Sciences: Outlook and Needs. Englewood Cliffs, N.J.: Prentice-Hall.
4. Politics in Science;Bissett,1972
5. Measurement and Conceptualization problems: The major obstacle to integrating theory and research;Blalock,1980