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Daniel J. Ziegler, Janine L. Hawley
Martin E.P. Seligman, Susan Nolen-Hoeksema, Nort Thornton [...]
Solvegi Shmulsky, Ken Gobbo
Paul W. Killian, Kathryn Rileigh, Elizabeth Denny
Peter Boman, Douglas C. Smith, David Curtis
Henry Davis, Leonard Zaichkowsky
Christopher Peterson, Lisa M. Ulrey
Jason M. Satterfield, Martin E.P. Seligman
