Perkins, Daniel F.
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Penn State Univ, Prevent Res Ctr, Clearinghouse Mil Family Readiness, University Pk, PA 16802 USA
Penn State Univ, Dept Agr Econ Sociol & Educ, University Pk, PA 16802 USA Penn State Univ, Prevent Res Ctr, 314 BioBehav Hlth, University Pk, PA 16802 USA