2.2.2 spase://SMWG/Person/Atalay.Ayele 2012-04-20T12:34:56.789 Atalay Ayele Geophysical Observatory, Addis Ababa University

University of Addis Ababa, Faculty of Sciences, Geopyhsical Observatory, P.O. Box 1176, Ethiopia

infogeobs@geobs.aau.edu.et 251 (1) 5506 55