1. Quantifying the presence of written materials and the use of outside texts in nature centers for environmental education Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Cagle, Nicolette L. (author) Format: Journal article Publication Date: 2013 Published: USA Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D07361 Journal Title: Applied Environmental Education & Communication Journal Title Details: 12(2) : 108-117