https://pictures.abebooks.com/isbn/9781138173767-us.jpg Digital Signage@Software, Networks, Advertising, and Displays: A Primer for Understanding the Business@By: Jimmy Schaeffler@Publisher: @Routledge@Print ISBN: 9781138173767, 1138173762@eText ISBN: 9781136031533, 1136031537@Edition: 1st@Pages: 296@Copyright year: 2008@Format: EPUB@Available from $ 23.18 USD@SKU: 9781136031533R90 Ebooks here: https://ouo.io/klFYd7