TEACHING POSITIONS
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Graduate Research Assistant and Graduate Teaching Assistant, Boston University and University of New Hampshire (1960-1966).
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Adjunct Professor, Department of Zoology, University of Montana, Missoula, Montana, (1970-1975).
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Consultant in Research, Department of Biological Sciences, George Washington University, Washington, D.C. (1983-1990).
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Adjunct Professor, Department of Preventive Medicine and Biometrics, F. Edward Hebert School of Medicine, Uniformed Services University of the Health Services, Bethesda, Maryland (1989-to date).
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Visiting lecturer, Acarology Summer Institute, Ohio State University, (1985-1994, 1997).
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Professor, Undergraduate and Graduate Faculty of Biology, Georgia Southern University, Statesboro, Georgia, (1990-to date).