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References
1.The Behavioral and Social Science Survey Committee of the National Academy of Sciences and the Social Science Research Council 1969 The Behavioral and Social Sciences: Outlook and Needs . Englewood Cliffs, N.J. : Prentice-Hall .
2.The Special Commission on the Social Sciences of the National Science Foundation 1969 Knowledge Into Action: Improving the Nation's Use of the Social Sciences . Washington, D.C. : National Science Foundation .