Characterization of the farming and livestock production systems and the potentials to enhance productivity through improved feeding in the Subalpine Highlands of Amhara region, Ethiopia - Gizaw, Solomon; Aschalew, T.; Lemma, W.; Beneberu, T.; Shenkute, G.; Wamatu, Jane; Thorpe, W.R.; Duncan, Alan J. (International Livestock Research Institute, 2012)