TY - BOOK AU - El-Beltage Adel (EDS) AU - El-Beltage Adel (EDS) AU - Saxena Mohan C TI - Sustainalbe Development and Management of Drylands in the Twenty -First Century U1 - 631.586/EL-B PY - 2003/// CY - Tehran PB - International center for Agricultural Research in the Dry Areas (ACARDA) KW - Dryland ER -