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“Characteristics of low and high project leader task performance and task qualified groups in selected Tennessee counties”. Master's thesis, University of Tennessee. http://www.worldcat.org/oclc/7844948
. 1969. “Characteristics of low and high project leader task performance and task qualified groups in selected Tennessee counties.”. Extension Study, No.2. vol. 7. Knoxville, TN: University of Tennessee. https://files.eric.ed.gov/fulltext/ED038564.pdf
. 1969.