9781453352359_RittenEcon2_0-IM-Ch01.pdf 9781453352359_RittenEcon2_0-IM-Ch01.pdf administrator Solution Manual: Principles of Economics, v. 2.0, Libby Rittenberg, Timothy Tregarthen, eISBN: 978-1-4533-5235-9, eISBN: 9781453352359