National Geographic (2) Egan, Gerard (professor Emeritus, Reese, Robert (prof And Chair Of The Department Of Educational (1) Gray, Loretta (central Washington University), Glenn, Cheryl (the Pennsylvania State University) (1) Schultz, Duane (university Of South Florida), Schultz, Sydney (university Of South Florida), Maranges, Heather (florida State University) (1) Schultz, Duane (university Of South Florida), Schultz, Sydney (university Of South Florida) (1)