Ezra, Markos Ecological degradation, rural poverty, and migration in Ethiopia : a contextual analysis / Markos Ezra - New York : Population Council , 2001 - 31p. : ill. ; 22 cm. - Policy Research Division No.149 . Includes bibliographical references and index. Subjects--Topical Terms: EcologyMigrationRural poverty Gov. Doc. Class. No.: US PC PRD WP-149