Talks Local Perceptions of Changing Food Systems in Northern Ethiopia June 26, 2019May 7, 2020 Crelis 0 Comments Tracing the Causal Loops: Local Perceptions of Changing Food Systems in Northern Ethiopia from Crelis Rammelt Rammelt, C. F. (2019). Masterclass: Tracing the Causal Loops, Local Perceptions of Changing Food Systems in Northern Ethiopia. Sydney: UNSW.