1. Changes in ag communications Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Zimmerman, Chuck (author) Format: Commentary Publication Date: 2010-10-14 Published: USA: ZimmComm New Media, Holts Summit, Missouri. Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 178 Document Number: C30698 Notes: Online via AgWired. 2 pages.