Yusman Syaukat Bogor Agricultural University   Faculty of Economics and Management Jl. Kamper, Kampus IPB Darmaga Bogor Agricultural University Bogor, West Java 16680 Indonesia   ysyaukat@gmail.com   http://fem.ipb.ac.id/index.php/profile/deans-message/69           JEL Areas: D2 : Production and Organizations: General D4 : Market Structure and Pricing: General