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Gizem Hülür, Nilam Ram, Sherry L. Willis, K. Warner Schaie and Denis Gerstorf
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Dorith Rotenberg, Nallur K. Krishna Kumar, Diane E. Ullman, Mauricio Montero-Astúa, David K. Willis, Thomas L. German, and Anna E. Whitfield
Pág. 404 - 410
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W. L. Willis, O. S. Isikhuemhen, J. W. Allen, A. Byers, K. King, and C. Thomas
Pág. 2026 - 2032
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Michael D. Hays, Lee Beck, Pamela Barfield, Robert D. Willis, Matthew S. Landis and Robert K. Stevens, William Preston and Yuanji Dong
Pág. 2544 - 2551
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W. L. Willis, I. Goktepe, O. S. Isikhuemhen, M. Reed, K. King, and C. Murray
Pág. 2451 - 2457
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