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by Lang Holdings Inc.
by Lang Companies, Inc.
by Pearson Learning Solutions
by Crews, Patricia Cox; University of Nebraska State Museum
by Robert W. Hutkins (University of Nebraska-Lincoln)
by Don A. Dillman (Washington State University, Pullman ); Jolene D. Smyth (University of Nebraska-Lincoln ); Leah Melani Christian (Pew Research Center for the People and the Press )
by Timothy Carr (University of Nebraska)
by Editor: Robert A. Stockley (Queen Elizabeth Hospital, Birmingham, UK); Editor: Stephen I Rennard (University of Nebraska Medical Center, Omaha, NE, USA); Editor: Klaus Rabe (Leiden University Medical Center); et al.