Action research in action in the Ethiopian highlands - Tamene, Lulseged D.; Woldearegay, Kifle; Mekonnen, Kindu; Yaekob, Tesfaye; Alene, Temesgen; Dubale, Workneh; Adimassu, Zenebe; Biyensa, Gurmessa; Yasabu, Simret; Thorne, Peter J. (International Center for Tropical Agriculture, 2016)